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The Best And Most Popular Marijuana Fertilizers

The Best And Most Popular Marijuana Fertilizers

The type of fertilizer you choose to use for your plants can make a world of a difference in whether or not your marijuana will prosper or just be barely making it. Producing a healthy, flourishing plant requires top notch nourishment with the right ingredients.

You will want to know exactly what your plant will need for the duration of its life cycle. What your plant needs in its beginning stages will be different from what is required later.

How you get your fertilizer is up to you. You have the choice of going to a local garden center or if you are feeling adventurous you can make your own.

Either way knowledge is Key! With this article we will help you gain that knowledge. Not only will you get an overview of the best fertilizers, you will get an in-dept explanation of various products: like the Bergman's Plant Booster. A great product composed of the exact right mix of nutrients to help your plant thrive and double your yield.

Homemade vs. professional

Of course, you can always make your own nutrients with your own preferred mixture, but usually it is much simpler to buy nutrients pre-made for all your marijuana plant needs. Keep in mind that marijuana plants have a wide assortment of needs.

Homemade marijuana fertilizers

Professional systems can prevent you from making any unforeseen mistakes with chemical reactions that may happen if you accidentally mix the nutrients the wrong way. You also won’t have to worry about deciding what to feed your plant and the necessary ratios. They already have all of that taken care of, which is especially helpful for beginners.

Tip: make sure to download my free Grow Bible and learn how to make your own soil mixture

There are so many options awesome marijuana products by well-experienced growers worldwide. The first thing you need to contemplate when deciding on the proper system to buy for growing marijuana is, what do you want your growing medium to be?

pre made weed fertilizers

Many brands, many choices

WARNING: Stay clear of any fertilizers that advertise being “slow release” or “extended”. While these systems may be good for regular plants, they are most likely going to cause an array of issues when growing marijuana.

Once you decide how you want to grow your plant, whether in soil, coco coir or hydroponics, make sure to buy products that are good for the specific process. Some products are good for growing in more than one medium and some are only for a specific medium. Here's a link to my favorite online nutrient store

Soil fertilizers

Fertilizers aside, without a proper watering technique, your plants will never thrive in soil. Newbie marijuana growers often make the mistake of watering their plants far too often.

Soil fertilizers cannabi

Proper watering technique

Here’s How to Water Plants in Soil:

  • At least the first top inch of the soil should feel dry
  • You have to add nutrients to your water every watering and flush with water ony once every two weeks
  • There needs to be about 20% additional water drain at the bottom of your pot when you water them
  • Repeat the first step

Be sure you are always added the proper amount of nutrients, and that you have chosen the right fertilizer for you. The following fertilizers are viable options for plants that are growing in soil:

Bergman's Plant Food

Bergman's Plant Food is a great product to use if you want to make sure you have a good mixture of all nutrients.

Healthy marijuana plants require three elements for firm roots and vibrant flowers with high yields. Nitrogen (N), Phosphorus (P) and Potassium (K) are all necessary and you will often see these values displayed on packaging as NPK. Nitrogen is important for enhancing the generation of leaves and phosphorus aid in bud growth. Potting soils are already mixed with these three elements which will aid the plant for up to three weeks. But as the plants grow they will need additional nutrients.

best marijuana nutrients

When your plant starts the leafing process, you will need to give it a 20% balance of phosphorus, potassium and nitrogen. If you are growing indoors, you’ll want to dilute this formula to one-quarter or one-half strength. When marijuana plants are grown indoors, they do not handle full strength dosages well, and it could cause the leaves to drop due to shock.

You can feed your plant each time you water, although it isn’t completely necessary. Twice per week will usually suffice. However, outdoor plants naturally get fresh air and their roots have free range to spread out and grow.

These product comes with a watering and feeding schedule for both soil and hydro. Go here for all the products and check out the individual productsfor their benefits and use.

Fox Farms Trio

Fox Farms is a top pick for newbie marijuana growers. With this, you can grow any marijuana strain and never need more additives. They have both the hydroponic and soil versions so be sure to get the correct one. This can also be used to coco coir growing as well.

Fox Farms Trio

Fox Farms Trio | top pick for newbie growers

There are three bottles you will need to use and may be able to get them as a package, the "Grow Big," "Tiger Bloom,"  and "Big Bloom." Available at this online store

Just follow the directions on the bottles. Fox Farms really all you need to get your marijuana to bloom just right.

Perlite and Vermiculite Marijuana Fertilizers

For soil growing you can make things nice and easy by buying a smart pot to grow you marijuana in and add a mix of Fox Farms Happy Frog soil with about 30% perlite for starters. Humbolt soil is also a good option

It you choose hydroponic growing, either perlite or vermiculite is added in a combination of about 50 percent fertilizer and a mixture of water and peat moss.

Perlite and Vermiculite

Perlite and Vermiculite growing

Perlite and Vermiculite are commercial fertilizers produced when mica is heated proportionately to 1,400 and 1,800 degrees Fahrenheit. When heated the minerals will enlarge, becoming porous. This creates white pellets retain air, have the ability to take in almost four times their own weight in water and will make sure solid potting soils never become tough lumps when dry.

The minerals in this formula naturally create magnesium, calcium and potassium that will eventually become infused into the soil feeding it with nutrients. After some time the pellets of both fertilizers become immersed in a mixture of the minerals discharged into the soil. Perlite, vermiculite and other media are available at Growershouse.

Yes or No to Miracle-Gro?

Miracle-Gro is a household name when it comes to plant fertilizers. Just about anyone you ask has heard of it and most likely used it for gardening “regular plants”. It’s one of the more popular formulas on the market, but it is not the best for marijuana growing.
Miracle-Gro - no

One reason it is not recommend is because the solution gives too much nitrogen during the flowering stage. As mentioned in this article, a proper balance of all nutrients is important to growing a healthy marijuana plant.

If you use Miracle-Gro, you will be putting the same formula on the plant for the complete life span.  Now in the beginnings stages it may work fine, but due to the fact that the requirements for marijuana plants shifts greatly from the seedling stage to when it starts making buds, you will need to switch your formula.

So while the reputation would make you think this is a great, easy option, our suggestion is to stay clear of using Miracle-Gro.


So, maybe cost is a concern for you or you are new to marijuana growing and need a simple, yet cost effective solution. In either case, you should check out foliage-Pro and bloom fertilizers by Dyna-Gro.


Dyna-Gro | Grow and Bloom

Whether you are growing your marijuana plant in soil, coco coir or hydro, this is an effective solution. Dyna-Gro is available at this link.

You will use Foliage-Pro while the plant is in a vegetative stage, and Bloom is good for the flowering stage. Just follow the instructions on the bottles! You can use these throughout the entire growing cycle from seedling to harvest time.

Urine as a Marijuana Fertilizer?

So, we already know that nitrogen is necessary for marijuana growth and development. Well, human urine contains large amounts of nitrogen.

Your urine is a healthy fertilizer for marijuana!

Now you don’t want to just go and urinate directly on the plants or even on the ground around it, as this could kill them. Instead mix a commercial plant food with one full bladders worth of urine per each gallon of water. You will have to use this solution immediately to avoid any toxic ammonia from formulating.

Chicken Manure

Chicken manure makes a nice marijuana fertilizers too. Organic slow release chicken manure compost increases yields and promotes healthy plants. Learn about the benefits of ChickenFuel compost.

Wood Ashes

Let’s say you live in an area where the soil is highly acidic, even too much for happy marijuana growing, you can use plain wood ashes to nullify the acids. Just mix a shovelful of wood ashes per 5-gallon bucket of water to the soil. And if that is not an option you can also try getting lime from a garden center in your area to do the same thing.

Vinegar-baking soda CO2 generator

Plants breathe in carbon dioxide and exhale oxygen, so naturally marijuana flourishes in surroundings that are high in carbon dioxide (CO2). White vinegar is an excellent source for creating carbon dioxide.

You can do this by taking a 1-liter bowl with baking soda in it and slowly dripping white vinegar into a 1-liter bowl. One drop of white vinegar every two minutes will suffice.
Vinegar-baking soda CO2

When the vinegar mixes with the baking soda a chemical response occurs that makes the two substances inactive, creating ample carbon dioxide. This takes place until either the baking soda is nullified or the vinegar is completely gone.

Indoor grower can use vinegar generators the same way I.V. drips are used in the hospital. The easiest way to do it is take a bottle that is filled with vinegar, duct-tape and hang it over some sort of open bowl or container that is filled half way with baking soda. You will poke a hole in the vinegar bottle cap with a small finishing nail which will allow it to drip its contents from the hole and mix into the baking soda in the bowl underneath it.

CO2 “bomb”

The best environment for a vinegar/baking soda drip generator is in a small confined space where there is no air that will blow away any of the CO2. You also definitely do not want the smell of vinegar that could bring unwanted attention to your marijuana growing operation.

A vinegar-soda drip generator doesn’t work well in the outdoors, where open breezes quickly carry off any CO2 that is generated. This in addition to a steady and unmistakable odor of vinegar that could, if the breeze was favorable, lead thieves or authorities directly to your plot.

For this process to be effective you want to create a carbon dioxide filled environment that totally stops any of the CO2 from going out of the space. You can even completely cover your planet with a huge plastic bag long enough to touch the ground and still not bend over the top of the plant.

Video by Sensi Weed

After that, put some sort of open plastic jar or container with 1-quarter baking soda standing up right under the huge plastic bag you are using to cover the plant. Next, from underneath the hem of the bag, pour a tablespoon of vinegar into the open jar. Pour just enough that it starts to foam as it creates CO2. Then go ahead and place the bag back on the ground.

Give it about 15 minutes before you giving it additional vinegar to the rest of the baking soda. Be sure to make sure everything is blending very well by mixing the contents with a stick.

Your CO2 bag needs to remain on the plant for at least four hours so that everything is completely submerged in the tissues. You can repeat these steps as you feel it needs to be done.

There is no such thing as giving your marijuana plant too much CO2. When doing these bombs most people prefer to do it at night time due to the smell it creates.


Compost isn’t necessarily the first form of fertilizer that most people would think of and let’s face it this doesn’t bring about the most pleasant thoughts either. Truth is that animal manure and left over food from your kitchen, creates some bountiful, thriving marijuana crops.

Animal poop and vegetables/fruits are recycled back into the earth the same as any other organic thing would, and along with it goes all the nutrients contained within it. These nutrients will be absorbed by your plant.

compost for marijuana

Create your own compost for growing

Using compost as fertilizer can be done in any location. If you are in an area where the soil is lacking what is needed to produce good crop, then this will enrich the soil. Read the article How to make marijuana compost for more information

After your first pile of compost is created and in the process of decomposing, you can start building another one. You will have to get a pitchfork and turn the compost so as to get everything blended really well. Do this very often, preferably daily to reduce the amount of time it takes to transform from a state of decay to dirt.

Another really important reason to do this daily is to avoid spontaneous combustion. This is the last thing you want. Spontaneous combustion happens when heat created by microbes feeding on rotting material that is under some form of pressure dries, then catches fire, burning the substances that it generated from.

Be aware that certain foods will decay much faster in hot temperatures. Also, give your compost about three full months to transition into rich soil.

Hydroponics fertilizers

Some people prefer to grow their marijuana with the roots planted in water. This is called growing your plant hydroponically. Using this method, there are no loose particles and it will never stop up your pumps, tube and any other hydroponic equipment you may own.

hydroponics fertilizers cannabis

Growing cannabis with the roots planted in water

General Hydroponics Flora Series Nutrient Trio

Flora Series Nutrient Trio

General Hydroponics Flora Serie | Grow, Micro and Bloom

This system is a great start for both beginners and advanced growers. You can also use this in coco coir and soil as well. The awesome part is: they sell a “performance pack” which has a pH balance test kit along with all that you need to start growing. This all-in-one system is highly suggested. Available at this link here.

General Hydroponics FloraDuo

General Hydroponics FloraDuo

General Hydroponics FloraDuo | A and B

If you want to narrow it down to two bottles instead of three, then there is General Hydroponics FloraDuo. This line is great for learning the different stages your plant will go through and what it needs to flourish.

You will see how the first bottle you start with is a high nitrogen formula, then once you are at a certain point in the growing process you will start using the second bottle. It has a higher concentration of Phosphorus and Potassium. This is how you will likely learn about the importance of the proper nutrient proportions.

Following the feeding schedule is very simple, just make to keep the pH of your water between 5.5-6.5 and this product is known to breed good results fairly quickly. General Hydro Nutrients are available at this link here.

Botanicare nutrition

Botanicare nutrition

Botanicare nutrition | Grow and Bloom

Another great system for your hydroponic marijuana growing needs is Botanicare.

The supplements you will need for the entire growing experience is Base, Bloom, and Grow. For the more experienced marijuana grower, these formulas allow you the freedom to play around and make adjustments to the calcium and nitrogen levels.

The system was created for that purpose. Following the instructions exactly may not provide the most desirable results, so if you want to try this system you need to have the right knowledge and be ready to experiment. Botanicare is available at this link here

Advanced Nutrients

Advanced Nutrients | Bloom, Grow and Micro

Advanced Nutrients


The Advanced Nutrients line is more on the expensive side but there are several growers who love it.

The truth is you really don’t need the expensive products to get the results you want. You will most likely get just as good - if not better - results with the less pricey products mentioned above. While Advanced Nutrients are certainly not necessary for satisfactory marijuana growth, it is worth a try if you don’t mind paying a premium for it.

I attached a link to the calculator that measures how much of the Advanced Nutrients products you will need:

Coco fertilizers

Growing in coco coir, or coconut coir, can have the similar advantages to growing in a hydroponics system. Coir is the fiber that comes from the coconut husk, and it’s used in a variety of products (i.e. doormats) as well as for gardeners. Any foods you use to grow in hydroponics is also good enough for coco coir growing.  It is suggested to get a smart pot for coco coir growing.

Coco fertilizers cannabis

Growing with coco fertilizers

Make sure to keep the pH between 5.5 - 6.5, giving it regular water every other time you water and also take into account that extra calcium and magnesium will need to be added. It is quite common for coco coir to experience calcium and magnesium deficiencies so having this supplement is a must.

It doesn’t matter which one you get. Most are fairly inexpensive and will work perfectly. General Hydroponics has a supplement by the name of “CaliMagic”, or you can try the one by Botanicare called “Cal-Mag.”

Canna Coco A + B and Cal-Mag

Both of these are very popular with people who prefer coco coir growing. Canna is on of the first marijuana specialized nutrient suppliers from Amsterdam. Products are world wide available, check this link at amazon for all Canna products

Fox Farms Nutrient Trio

Fox Farms Nutrient Trio

Fox Farms Nutrient Trio for Hydroponics

This system is excellent for preventing calcium and magnesium deficiencies, but it never hurts to have some Cal-Mag around just in case.

As mentioned earlier in this article the "Grow Big", "Tiger Bloom" and “Big Bloom” is all you really need. Just don’t overdo it in terms of dosage because the trio is already quite strong. Be sure to follow the feeding schedule provided by Fox Farms and you will be good to go.

If you want to purchase one of their supplements the FF trio comes highly recommended. Fox Farm Trio for hydroponics is available at this link here.

Root pH

Root ph weed fertilizers

Effectively managing the pH of your root is vital to protecting your plant from nutrient problems. Before you water your marijuana plants check the pH of the water. For your marijuana to properly absorb the nutrients it receives, the pH has to be right.

There are some pH test kits available at a decent price that will do this for you. Some of the nutrient systems on the market even provide these kits. After you have done this a few time, it will only take you about 5 minutes, and it can be done when you water your plants. Trust me: you will want to do this to ensure your plant is in its best health at all times.

Don’t worry about always getting the pH right. It is far more vital that it is monitored to see that is remains between the proper ranges.

Below are the proper pH ranges for soil and hydroponics growth.

Soil pH: 5.8 - 6.5
Hydroponics pH: 5.5 - 6.5

Read the article How to measure the pH and TDS of my soil
Read the article How to rinse hydro growing medium

When to Stop Fertilizing

Honestly, there isn’t one definitive answer to this question. It really depends on the grower as everyone has a preferred way of doing things. You may choose to either fertilize until the harvest time, or you can refrain from fertilizing days or even weeks prior to the end.

Stop fertilizing weed

When to stop fertilizing?

Generally, you would no longer provide nutrients to soil grown plants earlier than plants grown in hydroponics. A 1-14 days or more flush is common for hydroponic growers.

It is best to nourish your plants with nutrients for flowering and blooming for the first few weeks or longer of this process. You can choose to start flushing your plants about two weeks prior to harvest time. Be sure to use good judgment of when you think your plants are ready to be flushed.

Unless there are deficiencies such as the yellowing of leaves around the base of the plant, then you really do not need to give your plant a ton of nutrients. The way the plant tastes is affected by how much nutrients are added to it, so overdoing it could cause the taste to be off.

At the end of the flowering period, bottom leaves will turn yellow. This is normal, no lack of nutrients!

Whatever the suggested amount of nutrients are, it is best to cut that amount in half when you first begin. You will want to increase the dosage as soon as you detect the first sign of malnourishment problems.

Remember that a small amount really does go quite far!

Increase nutrient levels

Seeing yellow leaves near the base of the plant is fine so long as it is closer towards the end of the flowering stage. Yellow leaves only need to be addressed in the early stages of the marijuana plants life cycle. Just be certain to make sure there are enough leaves to make it to harvest time.

Overfeeding cannabis

Nutrient burn - overfed marijuana plant

Overfeeding your plant can cause nutrient burns which will never go away. Once the damage is done there is nothing you can do about it. Literally all the leaves will be burned forever.

Nutrient burn is a sure sign you have done too much. If in fact the buds are already developing, overfeeding may lead to burns on the sugar leaves on the plant buds. Although the actual buds may be fine, this results in the harvested buds looking very rough.

As soon as the leaf tips turn brown you have to slow down on the nutrients

Again, starting your dosage at half strength is best unless deficiencies are present. All strands are created different and you just may have a strand that can easily be affected by nutrient burn. Usually, the only people who have to increase their nutrients are the ones with fast growing plants and are using bright lights.

If your marijuana is being grown hydroponically, you can investigate the PPM (Parts Per Million) of your water, to observe exactly what your plants need. Click here for a great source to learn about PPM.

If you choose to water your plant by hand, then monitor the PPM of the run-off water at the bottom as well as the water you are powering into it.  By observing the run-off water after you poured your nutrients in, it is easier to notice if there is a difference in the PPM.

Let’s say you notice the PPM increases then it is an indicator that you may be providing more than enough nutrients. However, if the PPM decreases, then it necessary give your plant more food since your plant is absorbing the nutrients to the point that it is not leaving additional food.

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


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Comment Section

72 thoughts on “The Best And Most Popular Marijuana Fertilizers

By matt on 12 March 2013

no co2 with "lights-out",plants dot use it !

By Diab on 23 November 2013

No co2 at night is good advice . Miracle grow works good but not great . Need a recipe for short thick plants hearty and stubby with more buds than leaves for small confined areas to grow in.

By kirk on 15 February 2014

Protein based fertilizers would be best. Nature Safe Fertilizers

By GARY WADDELL on 1 July 2014

best and easyest outdoor/about toping it how big before toping it/picking leaves off it and best to feed it;;;; thank you;;

By john on 14 July 2014

hey diab try mainlining

By Fiji Grower on 16 July 2014

I use a tea of goose poop with a bit of molasses Fish heads and guts bottom of hole when planting. Plants will become huge soon

By ed on 29 December 2014

Believe it or not,google it.A cup of fresh urine in a gallon of water is great nute for any fruiting plant.Nutes are readily available so plants can use them immediately.
I used worm casings in early veg,then worm casings with urine during mid veg and mine strayed showing their pheno types before sending.Secondary branching will begin and plant will fill out.
Urine is highest in N but it has sufficient levels of p and k also.

By tom on 26 April 2016

This is very interesting..thx

By Cristobal on 4 September 2015

Is it ok to give my plants bonemeal just before flowering stage?

By latewood on 7 September 2015

Generally we would like to see this added top the soil a bit sooner. You could add some before flowering which would jump start the root growth.

By Johnny c. Watson on 23 January 2016

If plant crop is woman how female?♧♧♧♧♧♧♧♧♧♧7
@g13 will win hash from our country tensing fokk hers
Mr ten
So police in amsterdam let my passport then let
Growroom party50

By Jennifer ILGM on 25 January 2016

Hi Johnny, could you please be more clear i'm not understanding your question.

By joe w on 3 April 2016

What do you think about Peter's 20/20/20 in the early stages? what should I finish the blooming stage Out wirh if anything at all

By JohnPaul on 5 May 2016

If you want to make it really simple mix Peter’s 20/20/20 half and half with Peter’s 10/30/20 Blossom Booster at a rate of 1/8 tsp "each" per gal every watering or 1/4 tsp each per gal every 7-10 days...start to finish. You really don't need anything else. Peter's has been doing this for over 64 years.

By latewood.ILGM on 5 April 2016

I think you will have to monitor and learn how your plants respond to corporate grow mediums. I believe you can successfully grow in this medium; however; I think you could do better.

Growers striving to achieve maximum quality and yield in their grows do not use commercial garden variety fertilizers.

By fish on 14 April 2016

I not clean my gutters out so every year I take the composted pecan tree debris and use it as a planting medium and I catch the rain water from the guttering in a 55gal barrel with a air bubbler running in seems to work this good enough you think?

By latewood.ILGM on 7 May 2016

fish, I cannot vouch for your gutter compost. Best to have a test done by your local agriculture extension agent. You cannot get vbetter information than that.

As far as rain water. Keeping it aerated is a good idea. it is strongly advised that you PH the water before using it in the garden. PH 6.5

By fish on 14 April 2016

Also the rain water runs through the composted debris making a sort of tea also I grow outside in a pot

By Debby on 5 May 2016

I have used sugar and yeast to make Co2 for my planted aquariums. Wouldn't it also work as well as the baking soda and vinegar method?

By latewood.ILGM on 7 May 2016


Yes you can. It already sounds like you know how to do it. Co2 is Co2 🙂

By nick kelly on 15 May 2016

I think it is very unlikely that any portable CO2 generator could significantly alter an outdoor garden for more than a few minutes- even with dead calm air. Your 'room' is the size of a gymnasium
Physics teacher

By Fyshhtrap on 14 June 2016

This article just completely re arranged my outdoor grow, and never knew about human urine as an alternative additive!!

By Tracy Weber on 8 September 2016

I'm a new b by accident. I got some smoke from Colorado. I found a few seeds,i planted them and they took off. I live in the city with close neighbors, so i had to move the plants inside,3 of them took. I built a grow hut,and now i have some nice tops popping out. I do not know what the plants are but i thought i would try to put up a couple pics and may b some one who knows what's what can give me some advice. Thanks,this sight also came through with seeds. I tried to order some from another place,and they were very bad as a seller.

By Roy ILGM on 9 September 2016

Hi Tracy, you can put your pics up on our forum if you like. 😀

By Darnell Hagan on 4 December 2016

very nice info.great reading and a very big help

By Ntsetselelo on 27 December 2016

I've got the best advices ever
Please guys I'm here in Swaziland, Africa so I'm starting my business in dagga growing so please help me with any information in case u have and I will b using soil in an open space to do it.
I'm also a student here at the university of Swaziland in the faculty of agriculture
thanks a lot guys

By Rick Sampson on 29 December 2016

Thanks Robert! Very good article. Do you prefer dry fertilizers or liquids? I would seem to me that liquids would disperse in water more readily.

By latewood_ILGM on 30 December 2016

Hello Rick,

Liquid nutrients are nothing more than powder form ingredients mixed with water. One is not better than the other. It is a matter of choice and convenience. Some people do not want to spend the time to mix nutrients, and are therefore willing to pay for water (liquid nutrients) to be shipped to them. Either way; If you buy a commercial nutrient system from a reputable company, both will work just as well. 🙂

Happy Growing

By Gimlett on 11 June 2017

This guy is just trying to generate some revenue. Give the man break! haha

By SIRV on 3 January 2017

Can anyone tell me how well worm castings work? I have several earthworm bins of dark,rich ,earthy smelling castings! Scored some AutoFlowering WW seeds and don't want to mess up. Any ideas? PLEASE email me!!!!! Is diabetic piss good for my plants?

By latewood_ILGM on 4 January 2017


Hello. You should join our support forum at

All the info you nrrf to learn how to grow successfully is contained there, and we have many helpful knowledgeable growers and experts alike who are always willing to share. 🙂

By Psyko D.Smoker on 13 March 2017

could someone tell me why plant are not starting bloom even its over 3 months from blooming time. it's show just white head and those are going into become nothing but brown and dry. After i read this blog i notice one things i was fed my plants over does of Nutrient because they got brown leaves tips. Is that why my plant are not start blooming? And another thing i would like to asking about is, what are the things which occur on my plant's leaves and also stem and branch. I don't know how to call those, it's look like some kind of ladybug or cocoon in browny color but those are not living thing(i mean that bcoz those are not moving and it doesn't look like insert or bug. May be eggs, I'm not sure about this too) May someone could be able to tell me why? i was grow last year then failed and now i waiting for "May" that the time to start grow and also i learning to be this time for sure what i want. Thanks

By Roy ILGM on 14 March 2017

Hi Psyko D, it's best to hop onto our support forum. We have experts there that can help you with any troble during your grow. You can sign up here

By Psyko D.Smoker on 14 March 2017

Thanks Roy, i will. 😀

By Vincent on 29 April 2017

male plant maybe ?

By Psyko D.Smoker on 13 March 2017

Ugh, i forget i thing to tell, my growing place is hybrid, i mean that becoz i got indoor but not complete indoor, i grow my plants at balcony. Thus i meant hybrid. Also My home place at downtown area thus my plants are not get enough dark by car's head light at the night time, i wonder this is the one reason too thats why not to bloom.

By Michael on 19 March 2017

on making CO2 you don't tell how much water to use in the 1 liter bowl

By Kurt on 18 April 2017

Why would some be suspicious of the smell of viniger An why would you do this co2 bomb of a night? Plants only use co2 of a day so doing that at night would be pointless

By Jack on 20 April 2017

I grow outdoors and use composted horse manure or composted sheep manure. It works amazingly well. Not sure how much of which nutrients are in either of them but you can't argue with success.

By First Timer Legal Grow on 1 May 2017

Good information appreciate the pictures .
I know now not To add nutrients
Hope won't mess up the buds in the budding stage

By Rick on 25 June 2017

How about rabbit dropping pellets for fertilizer?

By latewood_ILGM on 11 July 2017


No new "hot" droppings of anything is good for your plants. Manure; Whatever the source has to be composted for 6-12 months with other carbon, and mineral sources.

Happy composting 🙂

By Frederick Acker on 17 July 2017

Wow this is the Best web site I've seen .

By Roy ILGM on 19 July 2017

Ha, glad you're enjoying it Frederick 😀

By Mainah on 2 August 2017

Neptune harvest. Ok for mj plants??

By latewood.ILGMl on 3 August 2017


We have never used Neptune Harvest, and we are not in the habit of critiquing a product in the blog; However, It is a commercially sold nutrient. Fish fertilizer is high in Nitrogen. As far as the whole line, I have no idea.

Perhaps you would enjoy joining our support forum and see what all the members are using. I personally have used many different nutrient lines over my career, and now I am using ILGM's Flower Power. I switched after doing a side by side comparison to Foxfarm and Botanicare nutrients. Super easy to use.

Happy growing

By gary on 1 September 2017

We have a brand new fertilizer called OMG Fertilizer. It is superior to other fertilizers due to the proprietary enzyme that interact with the root system to maximize nutrient uptake. Free samples available.

By Thomas on 11 September 2017

Thanks Gary for the free sample. I'm not a scientist, but your fertilizer is the best. As you said, I could
see extreme growth with only one application.

By Mark p on 6 October 2017

Hi I'm interested in trying your fertilizer which a view to buying more if it's ok ,, my email is [email protected]. Get in touch plz

By 620smitty on 14 August 2017

This is the first site that actually mentions Advanced Nutrients. I started with GH trio but the fluctuation in the ph was so great that there were too many problems with my grows. I switched to Advanced PH perfect 3 part and things have been great since. I know there are cheaper nutrients but this works great for me and the water I have coming out of my well. I use nothing but ILGM seeds. You guys rock.

By Luke on 25 September 2017

miracle grow does a better job than most of the other shit you could by and pay much.more .I know by experience it works wonder .The company won't tell you or tell you it's not good for many reason but the obvious money.

By Greg on 26 November 2017

Hey Luke. My name is Greg and I am new to this and read by all the "experts" to not use Miracle Grow. I looked at some of the others and too much money. Can you tell me how you use MG and how often? Thank you!!

By Terra on 27 October 2017

What are the best growers conferences and tradeshows to attend? I am mostly interested in learning more about the fertilizer end.

By Terra on 27 October 2017

What are the best growers conferences and tradeshows to attend? I am mostly interested in learning more about the fertilizer for growing.

By Taz on 27 October 2017

Somebody who has grown plants and is good at it and knows how to grow successful healthy plants can you guys give me the best fertilizer and nutrients and lamps I need? Im new to this i heard different watt lights grow different amounts.... 600 watt grows like 8 oz and 1,000 watt grows up to 14 oz...... So if somebody can tell me everything I need to grow a marijuana plant successfully would be truly helpful and appreciated it...... Im trying to grow mines in a pot not hydropolics and it will be indoors.

By kimj1129 on 1 November 2017

You could check out He sells complete indoor starter kits.

By Jill Horton on 28 October 2017

1st TechnaFlora B.C. Boost line
2nd House and Garden
3rd Foxfarm

Additives - Big Bud , Bloombastic, Roots Exculerator, Great White, Awesome Blossoms, Hygrozyme

By Joolz on 30 October 2017

We are only doing 3 plants for the winter, how do we calculate Fox Farms trio dosage? Thanks for your help 😊

By Vivian Black on 23 January 2018

Basically, as your article suggests, marijuana plants are best suited for organic fertilizers as urine and chicken manure can be effective ways to fertilize them. That sounds like a very interesting concept to explore more on. I'll try to see what other organic fertilizers are out there and how effective can they be for plants other than marijuana. Thanks!

By Gnarly Dude on 3 February 2018

Humboldt nutrients great flavor.
Ionic bloom
House and Garden

You can not go wrong with those lines. Way better than General Hydroponics.

By RC on 10 June 2018

Hi Robert,
I'm going to start up again. Try it outdoor again. Now I know about the deer, I have another question.
What other plants could turn a female marijuana plant into a male one?
Some say, only a male marijuana plat has the potential to turn a female into a male. Others go further and say it has to be the same strain even; a female indica can only be turned by a pure indica male plant. I don't think they are so picky. Given the right circumstances (at a time of weakness or stress) a male marijuana plant could turn a female plant male, regardless of the strain. There are even some non marijuana plants that if they are healthy male and there is a stressed out weakened female marijuana plant suffering somewhere nearby, chances are you will wake one day soon to find it popping seed pods instead of flowering.
What are the facts? What do I need to protect my girls from?
Thanks for your help!

By latewood_ILGM on 13 June 2018


Plants do not change the sex of other plants, regardless of strain or sex, or genetic disposition. Males cannot turn a female into a male. Males can pollinate females causing them to produce seeds. That's it.

Stress can cause females to "hermie" and that would cause the female to produce her own pollen sacks and there by pollinate the plant itself. Basically that is it. The facts.

Happy growing 🙂

By JP on 19 June 2018

Vermiculite and perlite are completely different things. Perlite for strictly aeration vermiculite for water retention and aeration

By Dt on 21 September 2018

I want to fertilize but I am unsure if after mixing chosen nutrients do I ph the mix to 5.5-6.5, or do you just pour the nutrient mix as is? My mix was over ph12 when tested.

By BIOLYNX on 9 November 2018

I planted my Harle-Tsu, Kryptonite and 24K directly into compost and used Fish Emulsion and water from our duck pond to fertilize during their growth phase. The Harle-Tsu grew between 7 to 8 1/2 feet tall. The Kryptonite were between 5' - 6 1/2 feet tall. I trimmed the top colas off of all of them and ended up with 6 to 8 colas on the lower branches that averaged around 16" to 18" in length. My one 24K that was planted late in the season only got about 4' tall, but the top cola was 20" long and after drying filled a 1/2 gallon canning jar. The rest of the colas on the 24K filled a second 1/2 gallon jar. My Harle-Tsu plants produced, on average, 20 oz of bud per plant, the Kryptonite around 22 oz and the 24K about 10 oz.

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