Learn the cannabis life cycle with weed plant pictures week by week

Growing marijuana can be confusing when you don’t know what to expect.

You think you’re doing just fine until the harvest comes around and you yield way less than you’d like.

As I have said, I love teaching others to grow marijuana and about the cannabis growth stages.

That’s why I’m going to teach you what to expect throughout a cannabis plant’s life.

I will help you gain control of the situation through knowledge so that you can grow the best possible marijuana.

In addition to an overview of the marijuana plant lifecycle, I’ll also share some tips on storing seeds and harvesting.

There are a few differences between growing indoors and outdoors, so I’ll discuss that as well.

Keep reading to learn more about the various stages of cannabis growth.

Or, jump ahead to the section that interests you.

Your marijuana plant will go through a lot in its lifetime.

Unquestionably, there will be several major milestones.

If you are familiar with them, you can better care for your plants. You’ll also likely notice health issues as they arise, instead of after it is too late.

When you know what the best-case scenario is, you’ll be able to recognize and fix problems.

Be that as it may, sometimes you might run into a problem you just can’t fix.

For one reason or another, a plant just won’t grow, and nothing you do can change that.

However, knowing what to expect never hurts.

See the difference a few weeks make?

Weed plant stages
Weed plant stages

Be prepared for every stage of your plant’s life by learning about the different needs and behaviors throughout their lifecycle.

Indoor life cycle

So, how long is the entire growing process?

It depends on whether you are growing indoors or outdoors.

On average, the indoor life cycle takes around 3 months from seed to harvest.

If you start with clones, it will take between 2 and 2.5 months. The life cycle length also depends on the flowering time of the strain you grow.

Some strains take 7-8 weeks to flower while others take 9-10 weeks. There are even strains that take up to 15 weeks to finish flowering.

Indica dominant strains have a shorter flowering time than Sativa dominant strains

The flowering stage begins as soon as you change the light cycle from 18 hours of daily light to 12 hours of daily light.

This is an easy way to know when your buds are ready for harvest.

Although environmental factors in your grow room affect the flowering time, it’s not by more than 5 days.

While flowering time may not be the most precise way to determine harvest time, it’s a good guideline.

Indoor life cycle
Indoor life cycle

The vegetation time depends on the size you want your plants to grow before forcing them to flower.

The more plants you place per square foot, the shorter the vegetation time.

Above are some pictures of plants with their age.

It’s best to force your plants to flower when the leaf tips are touching each other.

Seeing that the first 2 or 3 weeks of the flowering stage your plants will continue growing, make sure your plants don’t outgrow your grow room.

Outdoor life cycle

Want to grow outside instead?

Well, the life cycle of outdoor plants is a lot longer than the life cycle of indoor plants.

This is because when growing outdoors, you cannot control the light cycle, so you have to let mother nature do her job.

Depending on your local climate and the strain you grow, it will take 6 to 9 months from seed to harvest.

Marijuana plants react to the amount of light they receive. In the case of outdoors, the process can vary since the grower does not control the sun.

In August, when the days grow shorter, your plants ‘know’ winter is coming, so they start to flower.

During the beginning of the flowering stage, the female plants get pollinated by the males so they can produce seeds to reproduce.

Outdoor marijuana mixed with males
Females get pollinated when mixed with males

From the day your plants begin receiving less light, it will take 2 to 3 months before they are ready for harvest.

Most strains will be ready in October or November. Indica strains have a shorter flowering period than sativa strains.

Don’t choose a long flowering strain if you live in a climate where winter starts early

The outdoor season starts when the last frost is over.

Seedlings don’t like frost. To get a head start, you can germinate your marijuana seeds indoors to start with strong plants and place them outdoors when the frost is over.

To get the most out of a short growing season, try this pro tip:

Germinate your plants 2 months before it usually stops freezing.

Once you believe the freezing temperatures have ended, set your plants outside, but don’t transplant your marijuana plants immediately. Keep them in a container for a month.

That way, when the weather is too cold or too windy, you can easily place your plants indoors for a day.

30 day old marijuana plant
30 days old – Could go outside

There is one exception to both the indoor and outdoor life cycle: autoflowering strains.

These strains take 10 weeks from seed to harvest and are not sensitive to the light cycle.

Read all there is to know about these strains in my article “What are autoflowering marijuana strains.”

Cannabis seeds

Cannabis uses sexual reproduction to create seeds and spread them.

A single seed is produced by two parents and contains genes from both the female and male plants.

There is an exception, however. That is when seeds are produced by a hermaphrodite plant, but that is a complex process at-home growers don’t need to worry about.

marijuana seeds
Marijuana seeds

Beneath its waxy coat lies a tiny dehydrated plant (comprised of the root, stem, and two leaves), just waiting to be exposed to moisture and warmth.

Metabolically, the plant slows down and enters a static state, essentially putting itself into suspended animation. This allows the seeds to remain viable for long periods, but not indefinitely.

Once the plant receives water and heat, it sprouts.

Otherwise, it grows too old and dies. This is why you can’t keep seeds forever (although some seeds keep better and longer than others).

Next to the tiny plant, inside the seed, is a tiny store of calories to start the plant on its journey. This is known as the endosperm.

Download my free Grow Bible for more about the cannabis life cycle! 

Cannabis seeds will lie dormant until they are exposed to water and light.

The seeds themselves are fairly hardy and should be able to survive well in a dark, cool place, given stable temperatures. A fridge or cellar is perfect.

Here’s why you need to protect your seeds:

They can die, meaning they never grow into a harvestable plant.

You can keep this from happening by storing them carefully since extreme temperatures are the most likely way to damage seeds.

A temperature below freezing can kill cannabis seeds.

Germinating weed seeds

When you’re ready to grow your plant, expose the seeds to light and moisture.

That exposure will activate a series of hormones within the seed and kickstart the growth process.

Did you know?

A single root grows down and splits open the outer shell of your seed, then reaches down into the soil in search of water and nutrients.

At the same time (or just after), a green stalk will shoot upward, and two initial cotyledon leaves appear.

Germinating cannabis pictures (1 week old weed plant)

Germinating cannabis seeds
Germinating cannabis seeds

This is when seeds start to vary as there are actually two different kinds of seeds.

Cannabis plants are called cotyledons. This means they have two distinct leaves on their sprout, and they belong to the dicotyledonous group of plants. 

Read the article How To Germinate Marijuana Seeds for more info.

germinating weed seeds
Germinating seeds

As a sprout, the cannabis plant has two meristems— one at the crown which is known as the “shoot meristem” and one at the root, known as the “root meristem.”

The former will become the stem and foliage while the latter will become the taproot.

Cell division occurs in the meristem cells of the plant. This is the foundation of plant growth.

The meristem is important because:

The highest concentration of multiplying cells resides here.

Of course, there are multiplying cells throughout the plant, but they are heavily located in the crown and the roots. In other words, this is where the majority of plant growth occurs.

Germinating plant growth
Plant growth after germinating

Typically, as meristem cells mature, they will solidify into a single type of cell: that is, they will become buds, roots, leaves or stems, and will exclusively produce those cells.

Once a meristem cell has begun producing roots, for example, it will no longer be able to reproduce leaves or stems.

But here’s what matters:

Meristem cells are essentially identical. It is only their location and the precise stimuli they are exposed to that make them react differently.

This is an important distinction to keep in mind when cutting clones since the cells at the base of the cutting will become roots, and those at the top will grow into the rest of the plant.

You have to be careful, of course, but there’s a workaround if you mess up:

You could apply auxins like naphthaleneacetic acid to the plant.

Auxins are rooting hormones that will help encourage root growth on new cuttings. That can help if your roots simply won’t grow.

Looking for marijuana seed deals? Subscribe to our seed deals to gain access to weekly deals on marijuana seeds!

But remember, sometimes your seeds won’t sprout.

All seeds are different, but, in general, cannabis seeds lose efficacy after a year or so. That being said, some could sprout even after several years.

Moisture and seeds

I can’t say this enough:

Moisture levels should be kept as low as possible when storing seeds.

Moisture can allow fungus to grow or cause premature sprouting of the seeds, both of which are devastating if a grower has any intention of growing viable plants out of them.

“Over-watering is the biggest obstacle some growers face when germinating seeds and growing seedlings.”

Jorge Cervantes

When you do want to initiate sprouting, you’ll need moisture, but even then, be careful not to let the seeds absorb too much water, or molds and rot may become issues.

When you sprout marijuana seeds, moisture enters through micropyles.

Micropyles are tiny porous openings. If they are misshapen or clogged with foreign material, it may be difficult to germinate your plants.

This is not a big problem though, because:

You can soak your seeds in a water bath. You can also scratch the surface of the seed using a process called scarification.

To do this, nick the seed lightly with a sharp edge or use an abrasive surface.

Here’s the catch though:

You only want to do this if absolutely necessary for inducing germination.

Seeds that require a great deal of extra effort to sprout could pass on their traits to future generations.

It would be a shame to create extra work for yourself.

“Seeds do not need any extra hormones to germinate. Household water contains enough dissolved solids, food, to nourish seeds through their first few weeks of life.”

Jorge Cervantes

As the little plant hidden away inside the seed absorbs moisture, it will begin to swell and grow.

Eventually, it will burst out of the shell, and leave behind its state of suspended animation.

After that, it will require regular heat, water, and air. It will no longer survive in a dry environment.

Seedling stage

In the meantime, the seedling continues to grow breaking apart the seed coat that was protecting it.

At the same time, the root systems at the base of the plant begin to develop, while leaves begin to spread out and grow out from the top of the plant.

marijuana seedling stage
Seedling Stage

Soon, new leaves will grow, and the plant will enter it’s first true growth cycle.

From there, the plant will continue to grow bigger and bigger until the buds are triggered to flower.

After about 3-7 days of initial growth, a healthy seed should have grown into a seedling.

This stage begins when a plant starts to develop a stable root system and an initial growth of “true leaves,” that is, leaves that exhibit the same form and characteristics as mature cannabis leaves.

We are not talking about the cotyledon leaves that pop up right after germination.

Seedling growth pictures (2 week old weed plant)

Your plant can remain a seedling for a while, anywhere from 3-6 weeks. The duration depends primarily on environmental factors and the particular strain that you are cultivating.

Seedling growth week2
Seedling growth week 2

You’ll always want to pay close attention to your plants, but be especially careful to do this in the early stages of growth. Pay attention to the speed at which the foliage develops.

As the plant begins to develop foliage and a stable root system, it will transition into the vegetative stage of growth.

This is especially important if you are planning on transplanting. If you want to move your seedling to a new container or environment, now is the time to do it.

People who successfully grow do this during the seedling stage:

  • Maintain a temperature of 77 degrees
  • Maintain proper humidity
  • Limit the number of nutrients

Nutrients can burn the cannabis seedlings; if you must use them, use very little.

I recommend a fertilizer with nitrogen, such as Bergman’s Plant Food.

Our friends from a Pot for Pot offer simple solutions for your grow as well. Be sure to check it out!

You’ll need white light (18 hours per day) as soon as you see those cotyledons, as well a temperature between 68- 77 degrees and humidity of approximately 60%.

CFL lights are perfect for seedlings because they don’t produce a lot of heat.

You can place the seedlings as close as 2 inches from the lights – giving them plenty of light.

Vegetative stage

This is when your cannabis plant really comes into its own, producing the sort of big jagged leaves you’ve been waiting for.

Your plant can produce more foliage because it can now absorb and process much more carbon dioxide and other nutrients.

vegetative stage cannabis
Vegetative stage

During the vegetative stage of growth, the roots will continue to expand, and the plant will grow taller.

This is when people say you can “watch your plant grow.” A healthy cannabis plant can grow up to 2 inches in a single day!

The duration of the vegetative phase is controlled primarily by light exposure.

If you are growing outdoors, this means it will depend on what part of the world you are in.

For indoor growers, it means you can keep the plant in a vegetative state for as long as you please, but it normally lasts 1 to 2 months.

Vegetative stage week by week pictures

A lot happens during the stage. To begin with, the plant essentially grows leaves and stalks.

Vegetative stage week by week pictures
Vegetative stage week by week pictures

It also produces a solid structure that can support heavy buds. The plant grows taller and larger, with new layers of leaves being added.

At this time, you should be able to notice the difference between cannabis varieties.

Also read Vegetative stage for indoor marijuana plants

The temperature should be between 68- 77 degrees, with a humidity of around 50% to 70%, constant white light, (at least eighteen hours a day) and nitrogen-rich fertilizer as needed.  

The stage lasts approximately 1 to 2 months.

This stage is fairly passive for the grower, but you should pay attention to your light exposure.

We’ll have more on the relationship between light exposure and flowering in other articles.

Flowering stage

The last stage of the cannabis life cycle is the most important for growers (and everyone that gets to enjoy the harvest).

The flowering stage begins after a period of reduced light exposure. It represents the period when a plant becomes sexually mature and ready to spread its genes.

Both female and male plants have a flowering stage, but male cannabis plants usually mature earlier than the female plants, sometimes up to a couple weeks earlier.

Marijuana Flowering stage
Flowering Stage

When the plant reaches the flowering stage, it will begin to produce large quantities of sticky resin on the outsides of the leaves.

The resin is centered on the reproductive parts of the plant, also known as “the buds.”

This resin contains the highest percentages of THC (tetrahydrocannabinol) that you will find on the plant.

To emphasize its importance, THC is the active ingredient most sought after by smokers and medicinal users.

The specific potency of your plant (the percentage of active ingredient in the resin) will be determined by the amount of time a plant has spent flowering.

It also depends on whether or not the plant has been pollinated and fertilized.

How long is the flowering stage?

By now, you are likely eager to harvest the forming buds, but you’ll want to wait, and it may be a while.

The length of the flowering stage can vary depending on what cannabis strain you’re working with and how much control you have over your growing environment.

There are, however, some standards:

Most cannabis strains have a flowering period that falls somewhere between 6-10 weeks, although, given the right strain and the right conditions, this could go on for even longer.

For practical purposes, you can split up the flowering stage into a couple different sections.

First is the phase that occurs right after your plant finishes the vegetative stage.

During this time, you may notice some bud development. Many growers like to call this the pre-flower stage.

Pre-flowering stage

The cannabis plant will enter this stage after the fourth week of vegetative growth or 6-8 weeks after germination and develops pre-flowers.

To help induce pre-flowering, give the plants 18 hours of daylight.

This stage takes about 1-2 weeks. Pre-flowers appear between the fourth and sixth node from the bottom of the plant and are either male of female.

Skilled growers remove the males to ensure feminized strains. Pre-flowers look similar to female flowers and most contain a pair of white fuzzy pistils.

Also read Tree of life strain

However, most growers start the flowering period with a change in lighting.

After changing the light cycle to 12 hours on and 12 hours off, the cannabis development rate increases dramatically, and the internodes become shorter so they can form the construction that will carry the cannabis flowers.

An internode is located on the stem. It represents the area between two nodes where leaves will emerge.

During this time, the temperature should remain between 68- 77 degrees, with a humidity between 50% to 70%, a light cycle of 12 hours of orange-red lighting per day and a nitrogen-rich fertilizer as needed.

You should start to see bud-like structures just after the pre-flowering phase that probably lasted around two weeks.

They will continue to develop, but not as fast as before. You’ll also start to see early flowers.

temperature flowering stage
Temperature flowering stage

When you notice buds developing, the cannabis is in bloom and will stop growing.

This is great because:

The plant will now invest everything into the growth of its buds, while also growing thicker and denser.

The buds are heavy, covered in resin and you can smell them. Some pistils turn brown, and some big leaves at the bottom turn yellow.

At this time, the temperature should remain between 68- 77 degrees, with a humidity of around 50%. There should be a light cycle of 12 hours of orange-red lighting per day.

You can use a fertilizer with K (potassium) and P (phosphor) in normal amounts, but no more nitrogen!

Flowering stage weed by week pictures

About 10 days before the plant matures, you should stop fertilizing. You can identify maturity when the buds are dense, glimmering and smelly.

Also read Flowering stage for indoor marijuana plants

Until now, everything was green. However at this point, the pistils turn brown, the large leaves turn yellow in large numbers, the buds expand and gain weight, and the development of calyces slows down. Depending on the type of cannabis and on your taste, you can begin harvesting.  

Harvesting stage

Harvesting is not really part of the life cycle, but it is a crucial point in the life cycle of your marijuana plants.

When you harvest determines the taste, smell, effects, and strength of your marijuana.

The best way to decide when to harvest is by looking at the pistils.

The pistils are the little white hairs on the buds that slowly turn brown/red when your weed ripens

You can find more information about harvesting in our Harvesting Guide! Download it here.

Here is what to look for:

Marijuana life cycle harvesting stage 1
0-49% of the pistils are brown – Not ready yet
Marijuana life cycle harvesting stage 2
50-70% of the pistils are brown – Ready for harvest, but it’s still a bit young. Light taste and mellow high. Maximum potency not yet achieved
Marijuana life cycle harvesting stage 3
70-90% of the pistils are brown – Ready for harvest. Taste and effect are at their peak. You’ve reached maximum potency
Marijuana life cycle harvesting stage 4
90-100% of the pistils brown – Almost too late to harvest. Taste is heavy, and the effect is narcotic. Harvest right away and don’t wait any longer

I wrote a mini harvesting guide with everything you need to know about harvesting.

Learn how to harvest based on flowering time, pistils or trichomes, and get the mini-guide at this link.

It is a must-read guide for every marijuana grower!

Flowering for too long

Here’s the thing:

While you want your plants to flower for a good amount of time, it is definitely possible to let cannabis go for too long.

In this over-mature phase, the cannabis plant loses medicinal value because it deteriorates.

Marijuana Flowering too long
Flowering too long – Harvest on time

What happens when you fail to harvest?

The cannabis plant stops producing calyces, the stem swells, the calyces stretch themselves, and the leaves become yellow and fall off.

Each phase of the cannabis growing process has its own specific environmental factors such as humidity percentage, fertilization, light cycle, and temperature.

Keep all of these in check if you want a great harvest with dense ‘medical-grade’ buds.

Weed seed growth day by day

Throughout the process of growing marijuana, the plant goes through different stages.

These different marijuana plant stages help you identify how old your plant is and, more importantly, let you know whether your plants are growing too slowly.

It is important to understand that different strains grow at different speeds; that’s why there may be a  different weed growth chart for different strains.

This is especially true when talking about autoflowers.

What all strains have in common, though, is their weed plant stages.

These stages start with germination, which typically takes 2-10 days.

Their only requirement for this stage is water; nutrients aren’t as important because they’ll be using their cotyledons to get the nutes they need to grow.

marijuana seedling day 1
Seedling day 1

Seedling Day 1

After germinating, your seedlings will start with nothing more than a taproot. At this age, only the cotyledons are visible.

Marijuana Seedling day 2
Seedling day 2

Seedling day 2

On day 2, your seedlings straighten out with their cotyledons pointing upwards in search of light. By this time, the first true leaves of your seedlings begin to show.

Marijuana Seedling day 3
Seedling day 3

Seedling day 3

Despite how quickly your seedlings develop at first, they will begin to slow down any visible development.

This is because, throughout the first week, your seedlings are primarily focusing on developing their root system.

Marijuana seedling day 4
Seedling day 4

Seedling day 4

On day 4, your seedling will continue to prioritize the development of its root system. However, your seedling will also show some growth in the form of a new pair of leaves.

Marijuana seedling Day 5
Seedling day 5

Seedling day 5

Day 5 is where you see those new pairs growing out. They will be the same size as the first pair.

By this point, the cotyledons of your seedlings would have started drying out. Now it is time to water your seedlings.

Seedling day 6
Seedling day 6

Seedling day 6

Nearing the first week into its development, your seedlings are just about ready to begin vegging.

That part of the cannabis life cycle is when your seedling really takes off and starts thriving.

Marijuana seedling day 7
Seedling day 7

Seedling day 7

On day 7, your seedling would typically be around 1-2 inches tall.

However, how well it grows depends on two factors – light and strain. Light controls the height of your seedlings; the strain determines both the height of your plant and the size of its leaves.

Weed plant pictures week by week

1 Week old weed plant

1 Week Old Weed Plant
1 week old weed plant

How big should my plants be after 1 week? 

A one-week-old seedling should be around 1-2 inches tall with at least three sets of leaves.

These leaves, of course, include the cotyledons, which will soon fall off in the later stages of marijuana growth.

2 Week old weed plant

two wee old weed plant
2 week old weed plant

How big should my plants be after 2 weeks? 

After another week of growing, your plants would have gained an inch or two in height, and the second pair of true leaves will have also fully developed.

Two weeks into growing would look different in the case of autoflowers and some fast-flowering strains.

Typically though, a standard photoperiod plant would be around 2-3 inches tall with three sets of leaves.

Vegetative stage week by week pictures 

After three weeks, your cannabis plant has officially entered its vegetation phase.

This part of the cannabis growth stages is where your plants will begin rapidly growing in size.

The following weed plant growing stages pictures provide an idea of what you can expect each week of the progress.

​3 Week old weed plant

Three week old marijuana plant
​3 week old weed plant

How big should my plants be after 3 weeks? 

Although height is an important factor in determining the growth of your plants, it’s far more critical to pay attention to the number of nodes.

Height is a factor in the stages of growing weed because generally, the higher number of nodes you have, the taller your plant is.

4 Week old weed plant

four week old weed plant
4 Week Old Weed Plant

How big should my plants be after 4 weeks? 

You must transplant your plants into a larger pot by this point.

Once you do, your plants will begin growing rapidly.

At this age, your plant has started developing its branches and has grown out its leaves and its main stalk.

5 Week old weed plant

Five week old marijuana plant
5 week old weed plant

How big should my plants be after 5 weeks?

By week 5, your cannabis plant will have continued its rapid growth.

You’ll start to see the difference between indica strains and sativa strains around this time.

While indicas grow short and bushy, sativas will grow tall and lanky.

Knowing which one you’re growing will help you predict how the later weed stages will look.

6 Week old weed plant

Six week old weed plant
Six week old weed plant

How big should my plants be after 6 weeks? 

Week 6 into growing, your plant will start pre-flowering. The first sign is when you see white hairs on the internodes – those are the pistils.

If you don’t see these pistils and instead see pollen sacs or bananas, you must remove them from your batch to prevent your female flowers from being pollinated.

7 Week old weed plant

Seven week old marijuana plant
Seven week old marijuana plant

How big should my plants be after 7 weeks? 

Week 7 in the cannabis growth chart is often no different from week 6, as both are considered the start of your cannabis plant’s next stage in its cycle, its flowering phase.

This time is the pre-flowering period for cannabis, and it starts at different times for each strain.

Many autoflowers and strains with short vegetative periods will preflower around this time. 

Flowering stage week by week pictures

The last stage of your cannabis life cycle is its flowering phase.

Typically this will start once the days grow shorter or once you switch your plants from an 18/6 light and darkness cycle to a 12/12 light and darkness cycle.

You mustn’t disrupt the hours of darkness your plants get, or it may delay flowering or cause them to hermie.

2-Month-old weed plant

2-Month-Old Weed Plant

How big should my plants be after 2 months? 

A 2-month-old weed plant has white pistils that have darkened in color.

In the flowering phase of weed plants, 2 month old cannabis will no longer prioritize growing new leaves and instead focus on their buds.

This leads to your buds growing large as they ‘ripen.’

9 Week old weed plant

9 Week Old Weed Plant

How big should my plants be after 9 weeks? 

By week 9, your cannabis plants will continue growing their buds.

However, in the case of sativas, week nine is often the initiation stage for flowering.

Sativas tend to have a longer flowering stage than their indica counterpart. 

10 Week old weed plant

10 Week Old Weed Plant

How big should my plants be after 10 weeks? 

Week 10 is where most autoflower strains finish ripening; the only thing left would be flushing your plants before harvesting them.

In the case of photoperiod plants, your indicas would be in their last bloom while your sativas are in their mid-flowering.

10 Week Old Weed Plant

3-Month-old weed plant

3-Month-Old Weed Plant

How big should my plants be after 3 months?  

At this point, most indica strains and some autoflower strains are ripening while sativas are still in their mid-flowering phase.

Because of their long flowering phase, many growers harvest their sativas too early, which leads to sparse buds. You can also harvest too early with autoflowers.

If you want to avoid that, read this article on the best time to harvest autoflowers.

3-Month-Old Weed Plant

4-Month-old weed plant

4-Month-Old Weed Plant

How big should my plants be after 4 months? 

After four months of growing cannabis, you’re almost ready to harvest.

The most important features you need to look out for in this stage are the appearance of your cannabis’ pistils, the weight of the buds, its smell, and, of course, its stickiness.

4-Month-Old Weed Plant

To summarize:

Once you understand the cannabis lifecycle, it is easy to start growing marijuana like a pro.

No more rookie mistakes like freezing your seeds or transplanting at the wrong time.

Instead, you’ll be ready to try more advanced growing techniques and practice new skills.

Don’t worry, I go into much greater detail on other things you can do to improve and control the growth and health of your plants elsewhere on this blog. 

In the meanwhile, sit back and watch your flowers grow.

Thanks for reading. Please leave comments or questions below and don’t forget to download my free grow bible


Frequently asked questions

How much marijuana can I yield?

Your yield will vary based on many things. In addition to your level of experience, you must consider the strain, the conditions, and the amount of love you supply. For more on expected yield, read this article.

What happens when you stay in a veg or flower stage too long?

Staying in the veg or flower stage too long can affect the quality of your buds. If in the veg stage, your buds will not get dense, in the flowering stage your plant may die before harvest.

Is it okay to harvest early?

You can harvest marijuana whenever you want, but if you do it too early, your results may not be as potent. There is no hard rule on when to harvest, but you’ll find a good guide in this article.

If I start growing a plant outdoors in a pot, can I change my mind and bring it inside?

Absolutely! Grow indoors or outdoors, but it’s best to choose one and stick with that. When you change the growing environment mid-lifecycle, it can shock the plant.

What should I do if a germinated seed isn’t thriving?

If your seed has germinated, but it won’t grow, it probably has less to do with the seed and more to do with the conditions. Learn how to create the best conditions for seedlings in this article.

Can you extend a cannabis plant’s lifecycle so that it can bloom annually?

Cannabis is monocarpic. That means once it flowers it dies. You’ll only get one harvest out of a single plant; however, you could grow multiple plants in a single year. Learn how in this article.

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Robert Bergman


Robert Bergman is an Amsterdam-based marijuana grow expert who has years of experience from small grows to massive operations ... See profile

210 comments on “Learn the cannabis life cycle with weed plant pictures week by week”

  1. I have a plant that was germinated and planted in soil a week ago today and all I have so far is 1.5 inch stem and the first 2 finger leaves that do not seem to be growing larger. Im using a 3×3 grow tent with an 8000w LED light (ebay) about 12 inches off the leaves, 73 degrees F soil PH 7, watered 3 days ago soil still damp. Will this take off at some point? I was also thinking of going from 24/0 to 18/6 schedule will this help?

    • Hi Tim,

      Thanks for your comment. You should definitely see this plant pickup in growth shortly. Is it looking healthy otherwise?
      Keep in mind they may appear to plateau once they are at this stage, keep in mind they’re also hard at work establishing a root network at this stage.

      And on sprouts you can use a 24/0 light cycle to try and speed up growth, but it may eventually stress/tire the plants. So it is recommended to switch to 18/6 at some point.

      Keep us posted on your progress and let us know if you have any further questions!

      Happy growing,

    • Hi there,

      Thanks for your question. That’s a tough question. I’d say not to overwater is up there. Allow the soil to dry out between watering. Overwatering is definitely a common beginner grower error. Other than that I’d say making sure you have a proper light, unless you’re growing outdoors, of course.

      Let us know if you have any questions!
      Happy growing,

    • Hi there,

      Thanks for your comment. Our apologies for the belated response.
      The large leaves can be trimmed if they’re shading out any budsites.

      The larger leaves can be used to make edibles though they aren’t quite as potent as buds, of course.

      Happy growing,

  2. I soaked seed two days they split at one end then I put them in small paper pots with seed starter wet them and placed in a bright window. This is two days and nothing. Have I done something wrong?

  3. Question 1
    If I buy feminized seeds from here, grow the cannabis plats to flower stage, can I then expect to be able to get seeds from one of my plants if I let one or two buds “go to seed”? I just want my plants to allow me to regrow more plants without buying more seeds.

    I assume if I do this, I should get more feminized seeds of the same Purple Grandfather feminized/auto-flower plants from that.

    Thanks for any info that would school me.

  4. I have grow’en weed out side scense i was 25 i’m 65 now with different degres of success some years good some bad. I have tried white widow auto,3 different times ( indoors) look good strong healthy plants .But when they flower no stink no sticky fox farm potting soil fish emolsion for N for P= K I use happy frog by fox farm light LED humidity 45-55 temp 76 light on, 69 light off if you see any thing im doing wrong please help me

    • If you’re used to growing out doors, you’re going to want feminized seeds and skip the autoflowers. The autos are fast, but they’ll never give you the end result that a full run will. Grow on!

  5. the reason i haven’t been active is that we orderd seeds and seven did not germinate. i advise you of this and you said your team was looking into it. never herd more but none of the plants made it.

  6. Hi, I am growing for the first time and in one pot I planted two seeds and one germinated fairly quickly. I wish I could send you pictures cause it seems to be growing awfully fast. It is under red blue light 24 hrs a day and I keep the pot with a freezer bag loosely over it. So im just wondering is all this OK???? My seedling was planted November 17ish and on November 21st or 22nd it emerged and by the 24 it was about 1/2 in tall. The next morning it had straightened out and was about an inch tall. Today Thanksgiving it is 2 1/2 inches tall. Is this ok? Is it growing to fast??

  7. My plant just started to show those white hair… flowering.. i just started using b-52. What other stuff do i use with it plz help..

  8. My plants are 4 weeks almost and woke up to majority of leaves drooping. What causes 3/4 of plant to droop when some of it is sticking up towards light? Also why is 1 in same cycle half size of bigger 1?? Am I doing something wrong???

  9. Hey there,

    Then you fur the great article, is it ok to move my plant in early vegetative stage between indoor and outdoor to make use of the sun? If not which one should I stick to?
    Thank you

  10. Hello. I’m been a subscriber for a month or two now. And really enjoy reading your articles, Grow Bible and using what I have read . Currently I’m working on my 3rd cycle. Or harvest . First one I learned mainlining LST, pinching topping. Ect. 4 seeds . Ocean Blue, Alaska Thunder Fu….. Durban Poison. Veged 6 weeks put into flower and in week two I had all boys.. I took it not as a fail Learned my do ‘s and donts. . A day or so I came into 4 more seeds 2 Blue Galato , 2 Candy Kush. Harvested 3 girls 2 Candy and 1 Blue.. I wasn’t into the yeild I was just wanted to finish . I do have pics if I’m allowed I can share. This time I have 5 in flower 4 week. 5 in veg. 3rd week had six . My question or questions. Is I don’t know where my contact gets his seeds . When you talk about autoflower strains. Are all then names you list in that colum autos or just your seeds or is that for all seeds distributor . I have only looked on your site . So when I get he just gives me names I do some research and sometimes I see the name of what he gives me and one or two of them will be in the auto cadagory. . I’m stuck at this time . On to treat it as such or do what I’m supposed to when growing autos I only want to grow the old fashion indoors way . My setups are no where close to tents or your 1000 watt lights times 3 or anything like that .I dont use state of the art material. But I just want to grow marijuana and show off the beautiful flowers to my friends.. I do thank you for all the work you have put into helping others. I will try and figure how to get on your forum to ask questions. It’s 430 am. I missed my as smoke by 10 min. Good growing to the people if reading this.

  11. Hello I got plant it’s growing outside it’s got one big single stem plant I do not know what kind of strain it is I would like to know more send no pictures in it’s starting flower n buds

  12. It’s been 40 years since I’ve grown marijuana. I used to pinch the middle leaves coming out to make it Branch more to produce more buds I’m sure you’ve heard of this. William.

  13. I am a newby only have thre auto flower grower.one of the questions I have is I start to count down days when seedling starts second saw tooth set of leafs I harvest from tricomes and pistle color but I still count it oit

  14. I’ve read several just right stuff here. Certainly worth bookmarking for
    revisiting. I surprise how much attempt you set to create one of these fantastic informative

  15. I have 4 plants that have been growing for at least 2 years indoors. I am working on week 5 of my 5th harvest with these plants. 2 were from some standard bag seeds I found, 1 a bubblegum strain I purchased and 1 from a strain of deisel. Not killing the plants has shortened my turnaround time by over a month. I don’t understand why more folks aren’t allowing their plants to flower several times.

  16. Dude I grow mothers all year long. Veg cycle d9nt matter as Lo g as You’re over the 4 week mark. Check out oregan breeder group, how do you think i grow 8 footers and they grow 16 foot giants?

  17. Hey im from sri lanka
    I used the paper towel method to germinate my seeds and after i planted them 7days later the stem crashed down and all 4 plants died pls help me sir..

  18. So I am a first-time grower I planted pineapple and Gorilla Glue both are supposed to mature in 9 weeks half of the top half of the plants matured and I harvest the top half but bottom has now have been going 3 weeks over the maturity date is that okay

  19. Got a 100 % germanation with Your gens You really know what your talking about top notch top drawer i am abeliever i will bebuying more soon. 808. 5573525

  20. Hi Borthers and sisters thanks so much for all your help so happy with avery think all because of ye guys all the way from not so sunny Ireland

    bless you all thanks again

  21. Hello Robert thanks for everything can i ask if i could change an outdoor seed into An Indoor myself and also please robert help me on how to ferminize my plants.

  22. Does wattage matter when using LED lights? I just bought a full spectrum 1200 watt light. Can it be used from seedling to flowering stages?

  23. My plant is growing what looks like a Flower with seed sacs. It’s not a tight bud. What should I do? Trim them?

  24. I have a dozen plant however two are just 8 inches high loaded with Sticky and smell strong. Definitely a Different strain than my other plans whats up

  25. csaaphill, I suggest you go here: Support.Ilovegrowingmarijuana.Com Our members and staff can take a look at your pictures and give you informed advice.

  26. Desjohn,

    When to water: You water when your pot is almoost dry. Never let it dry completely but, do not keep it too wet by over watering.

    I advise you to join us here: support.ilovegrowingmarijuana.com

  27. I need to know if one of my plants merged into the other?
    I planted several seeds this year and only had two grow in the ground outside. one disappeared not sure why or how crook, snails, or other.
    But the other one is growing fine, but lately now the good one has what looks like two separate roots stems. did the other one go underground then merge with the one that’s still growing now or is something else going on?

    • added note to above question. The reason I ask or say this is because the other root stem seem to be coming from the direction the other one was.. So that is why I think that has happened. Or it was losing some stay and grew another stem to help steady it but still that’s what it looks like.
      any thing or an answer will help thanks.

  28. Does your “harvest” bring back the DEA agents who have lost their lives, or do your “synthetic” properties bring them back to life?


  30. I am a 71 year old viet nam vet fighting stageiv pancreatic cancer.you guys have taught an old dog new tricks! thank you!!

  31. The last statement That”Can you extend a cannabis plant’s lifecycle so that it can bloom annually? Cannabis is monocarpic. That means once it flowers it dies. You’ll only get one harvest out of a single plant; ” is false ILGM. Completely false. I have harvested the same plant 6 times now… All you need to do is just leave a few leaves and small buds on the lowest part of the tree and put it back in to 18hours light and within 2 weeks you’ll get crazy growth….. I’ve done this with multiple strains over the last 12 years and I’ve always been able to get them to re-harvest

  32. wen is the rite time to start using PH-water in the plant after it starts to grow im using clean fresh water rite now they just start it to grow wen is the time to start using PH-water

  33. Read follow directions Robert put in and you will grow great plants and get good genetics Roberts seed and your growing high quality buds , just saying

  34. More great info love this site I am a long term grower using seeds cuttings whatever I could get to Grow. how great to find your site with seeds of great genetics and copious info to digest well done Robert

  35. Thanks for the this info. As a beginner in a cold climate there are a few challenges ahead. Hopefully I am up to the task.

  36. (this is directed at the person jumping on someone for a question)The only stupid question is the one not asked. Don’t be some virtual elitest and down someone because your real life sucks. Suppose to be a tight knit community helping one another go grow some cucumbers and sit on one.

    • No doubt. The more information you get the better grower you will become. Only one way to get there is by asking questions. 1st grow is usually crap. Second is better..then better again each subsequent grow. All from asking questions.

  37. Hey I have had real good luck over the years growing outdoors, going to do some DWC this winter have everything I need and some nifty 1000 watt led’s, Problem is I started two pineapple express in rockwool, and the taproot came UP with the seeding in the upwards direction, what would have caused this problem ? in the meantime I have purchased some rapidrooters which I understand is much better then the rockwool,Thanks and Peace !

  38. I have a plant that is now 91 days of flowering, which followed 4 1/2 months of vegging. The buds never got very dense, lots of white hairs and a few red hairs. But it is a very healthy plant. Now my question- Am I waiting too long to harvest this plant?

    • Brian,

      You vegged too long. Lack of density in buds are generally attributed to lack of light intensity. When you beg too long you grow such a dense canopy that light penetration can be difficult. Without good light penetration, your flower density will suffer. I have always believed that veg time is directly proportional to harvest time, so you still have a month or so before harvest. That might help.
      Perhaps you might be interested in sharing your grow with us at support.ilovegrowingmarijuana.com where we could possibly suggest some ideas with you. 🙂

  39. Hello. I’m a first time grower. I have chosen Grandaddy Purple strain for my grow. This Indica strain supposed to have good medicinal value. I’m 58 yrs old and smoked when I was young but never really grew any Cannabis That being said I live in the US. TEXAS. Temperature here is still 99-102• degrees. In July 5th. I’m about to receive my seeds in mail. I want to try an grow a couple plants in my backyard So I don’t want to big a crop an draw attention. It will stay Hot like this till end of August which is the hottest month. So in December the temps usually are around 75-85 degrees. Even January are moderate. So can I start with seed germination in my house by August and take and transplant outdoors by the beginning of around September -December that’s 4- months in which I could grow this strain. I know ultimately the temp should be cooler but hey, this is Texas!!!! (Hot). What are your thoughts. Thanks

    • Steve,

      Once your temps get into the mid eighties consistently, you can move your plants outdoors. You could grow outdoors almost immediately if you invested in some 50-60% shade cloth 🙂

      Hope this helps

  40. I’m worried about ordering seeds to be sent to Missouri (USA) as it’s illegal here. What can you tell me?

    • J. R. ,

      I suggest you join the forum and chat with members in order to gain confidence to order.

      Thanks 🙂

  41. My plants are in the early stage of flowering. The tips of the leaves are turning brown.
    What am I doing wrong?

    • Jim,

      Sounds like a nutrient toxicty; However, it could be caused by PH being incorrect.

      The only way to truly help you is if you join our support forum; Fill out a support ticket, and share some images of your issue. We can help you there.


  42. I like ready the information you send. I grow outdoors on my deck this will be my 4th season. My biggest problem is at the end when little caterpillers hatch a borrow out a bud what kind i use for those little critters so I don’t hurt my plants. I am 71 years old and enjoy growing for my family

    • Regan Donahue,

      For catepillars most growers start off with food safe insceticidal soap. Try that first.

      Also; You may want to join our forum where we are set up better to help you through your grows. See us at: ilovegrowingmarijuana.com. 🙂

  43. Hello I have a question to brush the time of flowering of the roslin from switch 12/12 or from the discovery of the first flowers

    • semis,

      If you rush flowering to much or too early; Your plants will be immature and your quality and yield will suffer. Not sure if this answers your statement/question.

      Happy growing

  44. Thanks for what you do. I would like to see more about scrog method. How high off the floor of tent using five gallon pots. My two WW and one green crack are only 2 1/2 feet, bushy and lots of buds. It looks like 1 foot above pot is where my 4×4 screen should start. Thoughts?

    • Richard Brehaut,

      We are not really set up here in the blog for this type of support. Please join our forum, support.ilovegrowingmarijuana.com and witness all the different grow journals whereas our members are using the SCROG method.


  45. Thank you Robert & everyone at ILGM for your helpful advice & awesome seeds! I’m growing – Am haze, b/berry, N lights, WW & Gold leaf atm & they are all looking healthy & delicious. Thanks!

  46. Hi -I’m 79 and want to try marijuana to see if I can improve memory, cognition, etc. Can you advise what plant would be best for juicing for this purpose?

    • Gloria,

      I am not usre what you mean by juicing. There are many ways to extract cannabinoids.

      Perhaps if you join our forum; Our members can help you out with many ideas . 🙂

    • phill,

      Budding starts when the photo period produces at least 12 hours of uninterupted darkness.

      Perhaps this would help you; Join our support forum.


      Happy growing

  47. I’ve got plants out side that just started to flower and its starting to freeze at night , should I just start the harvest process or let it go for a couple weeks ?..? When I uncovered them this morning there was frost on the leaves ….

  48. Growing in a greenhouse with auto light dep want to use bubblegum kush I’m at 3200 ft in calif Need to get maximum yield is this a good choice or can you recommend a different strain

    • Frank,
      That strain should yield fairly fast. I suggest you look into our seed bank and read descriptions of strains. I know I personally do not want someone else to pick the genetics I grow. 🙂

  49. I have a plant I. A bucket. It’s 4times bigger than all the rest. Starting to bud and it’s just June. What do I do?

    • Glen Fleming,
      Be happy. It is every growers dream to have a plant grow strong and flower quickly. Enjoy. This is an outdoor topic, so outdoors it does not matter when plants flower as long as they flower. I assume you just have a strong Indica pheno or are using auto flower genetics.
      Best to join our forum and let us see what you are talking about. Peace

  50. Was wondering if anyone has used cow manure tea and diluted black strap molasses as fertilizer during the vegetative stage of growth…I am also in Thailand and my plants are growing tall, not short and bushy as I want them to. Could this be due to the type of plant…? Thank you in advance…

    • Davis,

      Cow Manure has to be cured or aged. As of Black strap molasses; This too would have to be cured and allowed to develop into a compost, just like any manure.

      I suggest you join our support site @ ilovegrowingmarijuana,com. We are better suited to help you out with and possibly provide you solutions to your grow issues.

  51. Hey yooo i got a quick question i lucked out and got a couple seeds in a bag of med i purchased and decided to throw em in a bucket, the grows going great with nothing more then some coffee grinds fruit peels and epsom salt for nutruients mixed with some basic potting soil some septic line dirt from the yard and peet moss, but i was wondering when would be the best time to top my plants, usually i dont top but id like to max my yeild

  52. started growing in the late 60s, they didn’t have all the information now days, and not being legal. I like u info easy to follow & no sales pitch. just grow weed my retirement has just bloomed keep up the good work. no more smuggling !!

  53. I threw a couple of seeds that I found in some buds out in my garden. I had a tomato plant in the same garden. I didn’t even think about the seeds growing. I was more interested in my tomato plant. Mind you, it’s a very small garden. Maybe four by eight patch of dirt. My tomato plant thrived. I went out one morning to water and pull weeds. One weed caught my eye. Then I remembered the seeds. I didn’t think it would even grow. This was back in May. It’s September now and I have a eight foot marijuana plant. Some of the bigger leaves have nine fingers. I haven’t trimmed at all. Just been watering and watching it grow. It doesn’t have bugs or any diseases. Lots of honey bees. When can I expect it to start Budding?

  54. Thanks for all the info you have given. You are teaching me a great deal and you are appreciated for the time you have given . I am a novice, but with all you have given me I will experience a growth in knowledge and hopefully success. Again, thanks from a learner in Indiana, United States if America. Would love to come to the Netherlands. Let me know of the most economical way if you would.

    • Thanks David! We have Dutch websites to calculate airfares from Dutch standpoint, you probably have similar websites for US outbound flights. Once you’re here it’s just the stay and excursions that will cost ya, the country isn’t big enough to be traveling 🙂

  55. Budman,

    I suggest you download and read our free grow bible, and then join our support forum. You must pay attention to and nurture your plants constantly, or you will get back exactly what you put into the grow; And that coul;d end up being nothing. Sorry. Read up. Join us in the forum. If you need me; Place “latewood” in the title. Peace, lw

  56. DeDe Wilkinson,

    Yes You can let the Sun control the grow cycle. Your plants should be ready to show flowers.

    There is no exact time a plant is ready. You are supposed to judge the maturity of the Trichomes. Something to read up on! 🙂

    Overall; It sounds like you will be able to finish and harvest, as long as it does not get too cold before you are ready to finish.

  57. I’m a new grower & want to now if I can have an outdoor plant but only get the buds when they’re ready & was wondering if I can leave the plant where its at in the ground & come back for the next harvest next year? Please advise.

  58. I am growing 4 clones legally in Oregon. I have them outside in pots. Can I let nature determine the light cycle? 2 clones I had since April and 2 since June, all are doing well. It seems as if it will be September before flowering and maybe October for harvesting. Does this sound right to you? thanks, your books have been very helpful!

  59. Cynthia,

    Is it in the ground or a pot? If it is in a pot then you can move it indoors but expect it to look rough for a few days. It is hard to create the Sun indoors. You will need a strong HID lamp and possibly an exhaust system to refresh cool air.

    I do not understand you statement “I have a rep< but…" If you are in a legal state, your neighbors should mind their business. Free country and all. However; If you have issues. Please join our support forum and we can help you get thropugh this move to indoors if you struggle with it.

    Happy growing. lw

  60. Thanks for this information it’s very helpful. I’m doing two outdoor plants on my deck in 5 gallon buckets. At what point should I put them into bigger grow pots?

    • It is hard for me to advise you as to when to transplant. In 5 gallon buckets they can get quite big. Maybe 2-3 feet high. Best bet would be for you to join our free support forum and start a topic for members to help you out. We will be glad to help.

  61. Question: Can I turn my outdoor plant into a indoor plant? I have a rep but the people next door don’t like it I rather bring it in doors? Please HELP.

  62. Larry,

    I suggest you download and read our free grow bible. It has a section on pruning. You need to know what you are doing, so you asked the right question.

    Some growers prune new undergrowth at the bottom of the plant but, leave the fan leaves alone. They are the heart and lungs of the plant.

    Join our free support forum. We have naby helpful growers and some expert growers there, always willing to help out. 🙂

    Happy growing

  63. Hi all… I read the entire above article but as u mentioned two cotyledon leaves.. But the one which I am growing shows three….. Could anyone help me with this

  64. OK I have a question I’m a first time grower and my girl is in a planting pot she is big and I can see some roots through the drange holes should I put her in a bigger pot and also I’m wondering about the leaves on it it’s got a lot of them is there any way I could cut some of them off because new leaves are growing where these leaves come out from the stem and I’m not sure what too do I really need some expert advice cause I don’t want to loose her I have worked very hard to get it where I got it so if you have any thing that will help please let me know

  65. Good stuff.. First year doing an outdoor grow and loving it. Much easier. 2 months in and my girls are all over 5 feet tall using. Mushroom compost and chicken manure.. Can’t wait tell the end. Will visit this page again if I need help. Grow happy my friends..

    • Rob,

      Great to hear how well your grow is going.

      I advise you to join our grow support forum if you need help for faster and a wider range of answers from many knowledgeable growers, and staff experts. Happy growing 🙂

  66. thanks T. S. for4 sharing. I did not see a question so, I am just going to welcome you. Perhaps you shopuld jhoin our support forum. Happy growing

  67. I have had some seeds from old school plants and have had them (new ones every year) for about 15 years. These are old school hardy plants. I plant 4 every year and one always produces viable seeds. A friend said it must be contamination from elsewhere; if this were so then all plants would produce some seeds. In my case only one plant produces all the seeds.

    • could be u have hamorphidite seeds have indicated for seven years mommy no seeds ever but not quite ready to share with world yet soon
      gonna rock your socks pure indicated from hymilayas

  68. ongalee

    We are so happy that you are succeeding with our genetics. We are not interested in disparaging other seedbanks. We can only guarantee our quality seeds. I also have no idea in regards to SS forums.

    Happy growing 🙂

  69. Hey Robert!!
    Thanks a bunch for the literature kind sir.
    And also for the Choco beans, which are so far growing nicely.
    Certainly more than I could say for TrueNorth, a waste of time and money, very dishonorable.

    By the way does anyone know what happened to Seedshare forums?

  70. Great tips guys. I am attempting to download book ,but I am not receiving any emails.? Could I get some help please 🙁

  71. Pedro,

    This is hard to answer when you have provided us with no more that I have a plant that is not thriving…

    I suggest you join our grow forum and share your methods in order for us to give you a more informed decision 🙂

  72. Dear. What happen when a plant is not flourishing even one month of induced to 12/12 and the other plants have no problem at all and they were raised together and all from good banks?
    Thanks for the good articles!!

  73. Is it OK to flush with tap water that is low PH ? The plants were grown with good PH water but I hate to waste it on a flush.

  74. Seems there is one hell of a lot of dis- information in some if not all of the pot grow books you all have read ….. study ” the tomato plant ” it requires all a pot plant requires so mimic what is written of them and forget what the books on pot told you ……….

  75. I waiting on my Bubba seeds too come in,how many days,before I switch to flowering???
    Oh and I have a 400 watt led light I’m going to use,should I switch to a hps light once I start flowering ?

    • If you need answers to that, you should do a lot more research b4 investing in the equipment needed. That’s a basic question that you should not have to ask in a forum, the answer is everywhere you look regarding lighting and veg.

      • instead of taking the time to call him out, you could have just given him the answer….

      • Occasionally I have a male plant amongst my females. How can I recognize the male plant early in the vegetable stage, how many week from the seedling stage? My growing is all outside. Thanks

      • Have a out door tree which is nine feet long 7month old..still waiting for buds…what I need to do to improve.

    • I put my seeds in paper towels for 6 days and when they had roots I planted them outside for 8weeks .I started them the end of July 2018 .and because the weather here in NY is still nice my plants are awesome.i didn’t need any lights I just watered them every day.it is now October 4 and there still growing buds.so you don’t always have to do much .like go out and get lights or special dirt.just watch the grow and they are beautiful plants.if you want pic of my plants.hmu.

  76. Mal ,

    You gave us no info on how you are attempting to grow your seeds.

    I advise you to join our grow support forum ar ilovegrowingmarijuana.com where we have many knowledgeable members and experts to help you out.

  77. Thanks Rob for the tips, and of course THE Book.
    Don’t know if you can comment on this one, but here goes.

    My third grow, Master Kush feminized (sorry from Nirvana in Holland) but this time indoors, under 250Watt Full Spectrum LED, plus 2 x 50w CFL’s for luck! , just the one plant for pers use, just fimmed a week ago, and immediately 4 x new tops.
    Feeding regime is BIOBIZZ kit, CO2 also, and really all is going fine BUT:-

    This plant is a damned midget, leaves good color, but now at 5 weeks its only 18-20 cm high.

    Foliage is dense and packed but nodes up the stem (which is now half an inch thick !) are so close together, like 2 mm’s apart.

    Fimming any more below is just about impossible due to this strange compact form its taken.

    Ever seen this before ?

    Thanks Mal

    • Mal,

      How did you start these seeds?

      What type medium and system are you using? This would give us a little more to go on. 🙂

      Sounds like you have a nice compact grow going, despite this issue

  78. phadre,

    It is advisable to treat your plants approx. once a week.

    Application should be done at 1st light and plants need to be completely covered, especially the underside of the leaves.

    Make sure to add some dormant horticultural soap, or insecticidal soap as a form of wetting agent. Milk can also be added.

  79. i am not a new grower but have a powdery mildew problem for the first time.my grow is in the house and i have to many animals in said house to use sulphur. my questions are, when using the vinegar solution or the baking soda solution, how often do i apply it? do i stop if i dont see any new spots?i assumed i should do it during lights off, is that correct?also part of my plant are three weeks from harvest part are only three weeks in,how close to harvest is it ok to use these methods without tainting the finished product.thank you so much for your book and blog. i saw those spots and had a little panic attack! ok big panic attack! thanks for helping me save my crop.in the near future i am going to invest in a clean light. can i get your grow book in actual book form? i prefer a book i can make notes in. thanks again.

  80. Diana,

    If the seeds germinated, then there was nothing wrong with the seeds.

    If your sprout is growing tall and stemmy, and then falls over; It is because, you light is too far away, and/or you did not provide a light fan to move the stem, allowing it to strengthen.

  81. Joan,

    You would be well advised to join our support forum. Faster help, and many great members that can help you out.

  82. how many days of 12-12 lighting “flowering stage” does a raspberry diesel plant need to complete its budding.

    • DankFrank,

      There is not set amount of days for any strain. All finishing times are approximate and can be varied due to grow methods, and lighting. You induce flowering by setting lights to 12/12 photo period. After that you wait until the plant appears to getting ready to finish. At this point you must monitor the “trichome development” in order to determine when to flush before harvest.

  83. Anxiously awaiting my seeds. Previously, I was given seeds from a friend which germinated. I was so excited. But then the stem grew and grew and grew and thinned out at the bottom; the tiny plant fell over and died. This happened time and again and I just gave up. Could this have been because they were old seeds?
    I hope I have better luck with better seeds!!

    • Hey Diane” what’s growing on. I have had success in rescuing a stretched out seedling that I did not want to go to waste. I simply scored one side of the excess stem, apply a little rooting powder to the scored area. Cover up with more soil or media then use something to prop it upright. It may affect, growth, yield but will continue to grow with care.

      I hope this helps in some way

    • Hi Diane. What kind of light are you using? Sounds to me like your plants are stretching due to insufficient lighting.

      • Thanks for all your information,I’ll be ordering some seeds from you before next growing season!!!

    • You can stop that by taking the seedling and replanting it deeper in the soil , or you can just build soil around the stem so that it dose not thin out , I have used this technique time and time again

  84. […] natural soil provides nutrients, the sun provides light, the rain gives the water and the entire life cycle of marijuana plants progresses naturally. This is not always possible, due to stealth concerns, climate and light […]

  85. Thank you for answering Nov. question. Appreciated! New plant in flower for 6 wks. Textbook. Now sweet leaves are wavy and twisty but very pretty. No brown spots. I looked at Boron but it’s definitely not that. Would appreciate any input. Thank you, Joan

  86. Joan,

    A plant that has been flowering for 12 weeks is probably ready to finish. At what stage is your trichome development? If you have 20%+ amber trichomes, I would think it time to flush and harvest in a few days.

    Before I would say there is something wrong, I would advise you to check your trichome development.

  87. We have a plant that has been in bud stage for 12 weeks. Leaves are turning purplish on upper and lower buds are like pods that are not filling out. Very pretty buds. Lots of crystals. Any thoughts?

  88. It is possible to harvest anytime you want. If you have no amber trichomes, then the plant is not ready. Potency will suffer.

  89. Is it possible to harvest a super skunk female at day 42 of 12 and 12 it is showing what I a newby thinks is signs of being finished please enlighten me it has cloudy tricomes about half and half clear and cloudy no amber but the hairs have changed Color from white to orange and the calaxes are swelled up but some are reopening and have white hairs sticking out the calaxes looks kinda like swirles should I chop are wait till all the calaxes are opened up and those hairs change color also also alot of the leaves are changing to yellow even sugar leaves l think it’s a deficiency but since I have 5 plants in a 5 gallon container in DWC can’t adjust for the 2 that looks like they are having a deficiency the other 3 look good but are still all white hairs no calexes much but there buds are big going to give those the full 56 days maybe more

  90. Is it possible to harvest a super skunk female at day 42 of 12 and 12 it is showing what I a newby thinks is signs of being finished please enlighten me it has cloudy tricomes about half and half clear and cloudy no amber but the hairs have changed Color from white to orange and the calaxes are swelled up but some are reopening and have white hairs sticking out the calaxes looks kinda like swirles should I chop are wait till all the calaxes are opened up and those hairs change color also also alot of the leaves are changing to yellow even sugar leaves l think it’s a deficiency but since I have 5 plants in a 5 gallon container in DWC can’t adjust for the 2 that looks like they are having a deficiency the other 3 look good but are still all white hairs no calxes

  91. Thanks for the free book, I would like to know if we can grow 2 strains in the same grow box. Thanks again for book I love it. When I start growing I’m getting my seeds from you. I need to get my grow box first. Thanks again.

  92. To many growers do this your plants take about a week after you switch to 12/12 to realise they are in flower so you should never count week 1 same goes for flower feed don’t give your girls this until you see first sign of flowers

  93. I agree. Very nice explanation. That would solve many growers misconception as to the length of time it takes to grow. Thanks.

    So we could say that; The pre-flower stage is the transition phase…basically.

  94. what about pre-flower stage – know it is in flower stage – but many people start counting flower times when 12/12 cycle starts. but, it really starts when there there is 1st sign of bud development (pre-flower stage 1-2 weeks) thoughts on ?

    • strongly recommend to trick those girls when ready to bloom total darkness for 36 hrs then 12 and 12 REMEMBER WHAT U GET IN ROOT SYSTEM U GET IN BLOOM been doing for 50 years call me pappy

  95. A few years ago I grew a marijuana plant from seed indoors . one night I woke up and thought a skunk was under the house the smell was so strong. I went into the room where the plant was, the smell was so overpowering I could hardly carry it outside. When I would brake a leaf or any part of the plant RED sap or liquid would flow out and I was wondering what caused it to be red.

  96. lee&jo,
    t is possible to replant in early flower; However, you must be really delicate not to disturb too much of the root zone, at this stage. I have done this successfully in the past.

    It is virtually impossible to guess what yield you can expect. It really depends on your grow methods, experience, and the environment you grow in. 🙂

    I invite you both to join our support forum, where you will find all kinds of info to research, along with expert advice and friendly members. 🙂

    • 4-6 ozs. When you have trimmed and dried and conditioned the buds, you will net about 4 0z off a typical 30″ tall indica dominant hybrid plant.

  97. Hi just a quick question
    You mention that it’s good to transplant at 77 degrees is that right?

    You’ll always want to pay close attention to your plants, but be especially careful to do this in the early stages of growth. Pay attention to the speed at which the foliage develops. As the plant begins to develop foliage and a stable root system, it will transition into the vegetative stage of growth. This is especially important if you are planning on transplanting. If you want to move your seedling to a new container or environment, now is the time to do it.

    The perfect heat during this stage is 77 degrees. Also, humidity is important, just like the time of germination. Nutrients