Marijuana seedling problems

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When your marijuana plant is a seedling, it is in its most important and most vulnerable stage of life. This means you will need to be well acquainted with the potential marijuana seedling problems that could occur so as to ensure a healthy beginning and future of your plant’s life.

‘Water and heat are critical at this point of development. The new, fragile root system is very small and requires a small but constant supply of water and warmth.’

Jorge Cervantes

The most common seedling are overwatering, underwatering, nutrient problems, temperature, and lighting issues. These are all preventable conditions that an educated or experienced grower will effectively avoid, but as a new grower you can also prevent them from occurring just by doing your homework.

Overwatering seedlings

Although we refer to it as “overwatering,” the problem itself comes from a lack of oxygen rather than an overabundance of water. Hydroponics systems, where plants are literally “planted” in water, work perfectly fine as long as there is enough dissolved oxygen in the water. If you are growing your seedlings in a container as many growers do, overwatering can be seriously risky to your marijuana plants. You will know your plant has been overwatered if it is drooping but not wilting.

Overwatering seedlings marijuana plant
Overwatering seedlings marijuana plant

If your little seedling is in a large pot, the chances are good that you are going to have an overwatering problem. Seedlings don’t absorb very much water, and a large container requires lots of time to fully dry out. Instead of planting your seedling in a large container from the beginning, start it out in a smaller container until they have grown significantly. You can then transplant it to a larger container.

If you don’t have a choice any longer because the seedling is already growing in the large container, then you are going to need to adjust your watering method. Simply water the plant a small amount of water, and pour it over the seedling in a circle pattern.

Makes sure the top inch of soil (up to your first knuckle) is totally dry before you water the next time. Don’t worry about water runoff with a small seedling until it has grown significantly.

Your plants will actually grow faster if they are put in a smaller pot, so make sure you are choosing a pot that is the best size for them and then transplant as they increase in size.

Download my free marijuana grow guide for more about watering.

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    That being said, it is also not helpful to have a large seedling in a pot that is too small for it. This is more about the size of the root system than the size of the plant above the soil. Your seedling might become root bound (when the roots have wrapped themselves around the outside of the container, therefore not allowing water to escape through).

    Root bound plants often exhibit strange symptoms, including drooping and nutrient deficiencies, but also strange and unpredictable ones like interesting patterns of discoloration.

    Often drainage (or, rather, a lack of drainage) is the problem when it comes to overwatering. If the water is unable to move freely through the soil and out the bottom of the container, you will run into overwatering health problems. Soil that is clay-based will not allow water to move freely through it, so avoid this type of soil when choosing your planting mix.

    You should also make sure that there are enough drainage holes at the bottom of whatever container you are using, and that these drainage holes are not jammed or clogged and therefore preventing proper drainage.

    Perhaps the simplest cause of overwatering to fix is watering too frequently. You need to allow the soil to have enough time to dry, so as to give your roots an adequate and consistent amount of oxygen. Oxygen in water is absorbed rapidly by the roots, meaning they will also need to have pockets of air within the soil to survive. If you choose a lighter, more airy amendment for your potting mix (such as Perlite), it will retain more oxygen than a thicker or heavier soil.

    You can add as much as thirty to forty percent Perlite to the mix to ensure maximum oxygen retention.

    Another way to increase the amount of oxygen in your soil is to use containers that allow air to come in through the sides as well as the top.

    Smart Pots or Air Pots are examples of such containers. Another way to combat overwatering issues is simply to water your plants less than normal during colder periods of temperatures. Their growth, processes, and water intake all slow down at lower temperatures, so don’t forget to adjust accordingly.

    Underwatering seedlings

    Symptoms of underwatering include wilting, improper growth, and a lack of moisture in the soil. Although it happens less often than overwatering, it is still a serious problem that could negatively impact your seedling. It happens especially with beginners who have been warned – ‘never overwater your plants,’ so they overcompensate in the opposite direction.

    Underwatering seedlings marijuana plant
    Underwatering seedlings marijuana plant

    If you combine underwatering with an overdose of nutrients, it will cause the seedlings to turn dark green, stunted, twisted, and new growth will be discolored.

    Because there is a constant water loss in plants’ leaves through the transpiration process, they need to always have some presence of moisture to ensure proper functions and processes.

    If the roots can’t absorb any water, the plant processes will simply stop, and the growth will be significantly slowed or stopped. If roots are ever allowed to fully dry out, they will actually begin to die.

    While it’s a less common problem than overwatering, underwatering can be far more serious when it comes to negative health effects. If you look at the soil and you see that it has begun to separate from the container, this means that it is far too dry to be healthy for your plant.

    Underwatering is an especially grievous offense when it is combined with an overdose of nutrients.

    If this has happened to your plants, it is at least a simple fix: just add more water. Start watering them more regularly, and they should start to bounce back quickly and relatively easily.

    Even if the soil mix is “hot” (which means that lots of nutrients have been added), your plant should have a good chance of adapting to it with an adequate supply of water.

    Nutrient problems

    You will recognize nutrient problems in your seedlings if their leaves are yellow, crispy, spotted, or have other forms of discoloration. Your marijuana seedlings should be green at all times – it’s as simple as that. The nutrient problems might come from too many nutrients, too few nutrients, the wrong kind of nutrients, or something else.

    If your plant exhibits symptoms like tip burn and dark leaves, it probably has nutrient toxicity of some sort. After a while of untreated nutrient toxicity, you will start to see other symptoms, such as yellow lines located on the seedling’s lower leaves.

    Marijuana seedling nutrient problems
    Marijuana seedling nutrient problems

    If your plant has a nutrient deficiency, then its leaves will probably look pale or yellowing, and you might also see signs of other leaf discoloration. A nitrogen deficiency is almost always at fault, and this will make the leaves include brown with the yellow and will go soft and will fold before they become crispy and drop off the plant. Don’t be deceived if the yellowing leaves are actually located at the top (newer growth only) – if this is the case, then it is unlikely that nitrogen is the nutrient at fault. A nitrogen deficiency generally affects the oldest leaves at the bottom of the plant before it reaches the other leaves elsewhere.

    Problems with bugs can resemble nutrient deficiencies at first, so be careful to identify the symptoms correctly.

    Your seedling’s nutrient problems might come from a “hot” potting mix, meaning it has lots of nutrients in it. This can simply be solved with adequate watering and waiting until the seedling has “grown out of it.”

    If your soil is slow release soil, such as Miracle-Gro soil, it can cause nutrient burn and will eventually damage your final yield and bud development in the flowering phase. Don’t ever use a slow release soil.

    Download my free marijuana grow guide for more on nutrient burn

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      Seedlings don’t need many nutrients, so don’t overload them with them. As long as you have started with a high-quality potting mix, you shouldn’t add more nutrients until at least after the first few weeks of growth.

      Nutrient toxicity can develop very quickly (within one night!) if you dump your plants with lots of nutrients all at the same time. When starting to feed your seedling nutrients, you should always use just half of what is recommended on the provided nutrient schedule. Check how your seedlings are reacting to it, and then you can increase the dose from there.

      If your seedlings have a nutrient deficiency, it is most likely that a nitrogen deficiency is to blame. A nutrient deficiency of any kind could come from using a soilless medium that doesn’t have any added hydro nutrients, which are necessary for a hydroponic growing system. Another cause in a soil-based growing system could be that the grower isn’t adding in nutrients when the plant has used up the soil. Nutrients in soil don’t just sit there forever; they are absorbed and used by the plant, meaning you will always need to add in some more as time goes on.

      Also read “A quick crash course in nutrients

      One of the most common causes of nutrient deficiency is feeding your seedling or plant the wrong type of nutrients. You need to make sure the right type of mix and use the right mix during the correct stage of life. Use a vegetative formula for your plant’s beginning part of life, and a “bloom” formula for the flowering and budding stage.

      Once the plant is fully grown you will need to start thinking about flowering and harvest time.

      Our free little Harvest Guide will help you determine the best moment to cut your plants.

      Harvest Guide

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        Another common nutrient problem with marijuana plants is a pH imbalance. Make sure to always maintain a balanced pH level, and you should be aware of the fact that the pH level will fluctuate. Improper watering (see above) will also cause a nutrient deficiency if left too long. Planting your seedlings in a container that is too small will lead to them becoming root bound, which will cause your seedlings to display symptoms of nutrient deficiencies. Problems with bugs can resemble nutrient deficiencies at first, so be careful to identify the symptoms correctly.

        High temperatures

        If your plant is experiencing too high of a temperature, the leaves will start curling at the edges until they look like tacos or canoes. They will also wilt and start showing spots.

        Heat stress high temperature marijuana
        Heat stress high temperature marijuana

        Make sure to keep a constant eye on the temperature of your grow room, or know the weather to see if you will need to install any special equipment to keep the air temperature of your plants down. Seedlings are happiest when the temperature is somewhere between 68 degrees and 77 degrees Fahrenheit. Make sure to use your own thermometer to double check this. You should also be sure not to position your grow room lights too close to your plants, so you can avoid burning on the closest parts of the plants.

        Improper lighting

        Improper lighting marijuana
        Improper lighting effect marijuana plant

        Burnt leaves, crinkled leaves, tall seedlings that are falling over, and lots of stem spaces between nodes are all symptoms of too much or too little lighting. Plants that are too tall have experienced too little light while plants that look burnt or fried have had too much light.

        TIP: Looking to buy seeds? Visit the ILGM marijuana seed shop.

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        Whether it’s too much or too little, improper lighting can cause some serious problems for your marijuana seedlings. Luckily, it’s usually an easy fix: just move the lamps closer to or further away from your plants. If you are growing your plants outdoors, try covering them up on extremely hot days, and make sure every bit of your plant is exposed to direct sunlight. If they are exhibiting signs of lighting problems, you can fix the problem early on by adjusting the lights, and this should be enough to get your seedling back on their “feet.”

        Marijuana plant symptoms

        Marijuana plant symptoms dead seedling
        Marijuana plant symptoms dead seedling

        Leaf symptoms:

        • Discoloration
        • Yellowing
        • Crispy texture
        • Spotted
        • Tip burn
        • Burnt edges
        • Pale leaves
        • Death of leaves
        • Slowed growth

        Plant symptoms:

        • Wilting
        • Drooping
        • Algae growth
        • Improper growth
        • Slowed growth
        • Dark green
        • Stunted growth
        • Twisted growth
        • Discolored new growth
        • Other discoloration

        In general, your seedlings are going to want a moist environment, warm temperatures, and some light. They aren’t going to want much for nutrients. As long as you follow these points, your seedlings should be perfectly happy and healthy.

        Also read “Symptom checker – Identify marijuana plant problems

        Remember that plants with strong genetics have less chance of getting sick and are less vulnerable to diseases, deficiency, pests and environmental stresses. So make sure to buy marijuana seeds from a trusted seed bank.

        FAQ about marijuana seedling problems

        Why are my seedlings turning yellow?

        Seedlings mostly turn yellow when they have nutrient problems. They could be lacking enough nutrients, getting too many nutrients, or getting the wrong kinds of nutrients.

        Why are my seedlings growing so slow?

        They might be lacking the essentials they need to grow into healthy plants. Make sure they have proper lighting, warm temperatures, a moist environment, and enough nutrients.

        Why are my seedling leaves curling down?

        Seedling leaves curl downwards when they are exposed to temperatures that are too high. Make sure the temperature in your grow room ranges somewhere between 68 and 77 degrees to avoid such problems. 

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


        Avatar for Robert Bergman

        Robert Bergman

        Robert Bergman is an Amsterdam-based marijuana grow expert who has years of experience from small grows to massive operations. His passion for growing led him to develop his own Gold Leaf strain. Now, Robert is dedicated to sharing his knowledge with the world.... [Read full bio]

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          99 comments on “Marijuana seedling problems”

          1. Hi Thomas,
            Thanks for your message. You can run the light 24 hours straight. Though I personally prefer to give them a couple hours of darkness every night as well, to avoid stressing them. But running the light 24 hours will make them grow faster.
            I’d start off with 50% if you can do that, and then put it on 100 once the seedlings start to shoot up a bit!
            I hope this helps!

          2. Hij Eleanor,

            Thanks for your message. Yes, this can be done and will help oxygenate the roots and soil!
            Use a ratio of 1 part hydrogen peroxide (diluted) to 10 parts water. Make sure to use the 3% hydrogen peroxide dilution as well!

            We hope this helps!
            Kind regards,

          3. Should I have the light on full power and keep it on 24 hours when the plants are just starting to grow or am I suppose to turn light off part time or turn down to 50% power

          4. Hi Dre,

            Thanks for your comment. You could do that. But keep in mind repotting will be stressful for the seedling and may cause more issues.
            A seedling should grow well in a big pot as well, so I am not sure if that is the actual issue.
            Feel free to reach out to our customer support for some more help with this ([email protected]).
            Kin regards,

          5. I fear that i may uave overpotted my seedling. its not growing very fast. can i transplant it from a large pot to a solo cup? will this help my seesling grow?

          6. Hi Suzi,

            Thanks for your message. This likely means your light source is too weak or too far off. This will cause your seedlings to start reaching for the light, and the will get long, weak stems, and this could eventually kill your seedlings too. Make sure they are getting enough light, your light source is strong enough, and that its not too far away from your plants. If you’re using natural light, you will need a sunnier spot for your seedlings.
            I hope this helps!
            Happy growing,

          7. Guide to trimming outdoor growing plants that
            are already acclimated. Bought local cultivars and
            now 18” and want to trim. When? How much?

          8. 2 of my 4 Headband seedling seem to have stalled in terms of growth. Initially all 4 started to become tall and spindly. I replanted them lower in the soil medium but grow seems to have stopped. 3 of 4 has 2 small 1/4” leaves while 1 is exhibiting 1” long growth. All plants are in a south facing window and watering has not been excessive. What is the problem.

          9. My seedlings have only got their first set of single leaf but aren’t growing So what’s happening with them ?

          10. Why does my seedlings leaves turn down. They look droopy, but their firm. Should I be considered. Thanks

          11. Is anyone else having problems with the wedding cake seedlings only sprouting with one leaf and then dying?

          12. Well just discovered that miracle grow soil has too much nitro. It’s has nitro toxicity. Getting to go to flower stage. What can I Do?

          13. 1200w sounds like a lot. For 4 plants? Are you running the light full out or a %? Dimmer? Plants curling back with dark green leaves can be overfertilized. Good luck. Your pH is fine for soil. Lower for coco or hydro. Check you arent overwatering.

          14. This is all good info. ILGM has the fire. Don’t get it mixed up. That goldleaf grown right is the fuely fire dreams are made of. Let you know how the blueberry auto is in a minute… fast delivery. Seeds legit. Germination rate high especially with A bit of practice & reading.

          15. I have 4 strains growing now since 1/9 sprouted just fine in need of assistance one is pointing upwards in growth and others are curling downward ph is at 6.5 to 7 lights are above proper distance 1200 watt philzon LEDs soils moist. Help me please wish I could show pics.

          16. Very handy site, , been growing for years now, just the last 3 years growing inside, , using Rocky -point potting mix, have learned a lot from sites like yours , have had my ups and downs from being too hot, learned from that, have found that long as i have a good fan on plants, they can take some heat, and still survive , have had room up to 103F, and plants have survived , Lucky The season is coming into cooler weather, nearing the end of summer, and have had plants outside not in full sun, that have grown 15 inches tall and have buds all over near ready to harvest, , very healthy at 3 months

          17. Thanks for you time and effort your website is amazing. I have pooped your beans and they are doing great looking forward to doing plenty of business with thanks for your professionalism.

          18. I have an AK-47, Bubble Gum, and Sour Diesel seedlings all prospering well ♡♡ thank you ILGM #heartstronggarden

          19. The plants i have are about four inches tall and Just getting their first set of real leaves but it seems that they are getting brown tips and spots ive given no nutes and cant see any bugs so what else could be causing this

          20. When growing outdoors…is growing in a glass/uV preventing greenhouse self-defeating…..?…….i have read that it takes uV sun rays to change CBD to THC… this correct ?

          21. Robert i have some white widow i just got from you and i have my first batch White widow wont germonate .. i put a seed right in soil and it came up!! Go figure.. I usually have gotten seeds to germinate in 2 days and these have been in wet towels im dark and nothings happened

          22. Hi folks
            I’ve been growing for some years and have Some experiences and now want to exp som different strains but was curious about the var of seeds and wether they would require much different fertiliser mediums to grow,… i only grow outdoors as the PH chemicals in hydro Growing taste shit .

          23. I tried many times to get my grow bible and signed up over and over again. but to no avail. Help.

          24. Professor Bergman, hello my name is noel Gerena and 95% of what I know I have learned you. I appreciate your expertise and excellant simple explanations for complex processes, I have but a few suggestions as a total fan but not so proficient on web sites. It seems the more that I learn the more questions I have, can you make it simpler to tackle like transpiration, spray or dont spray. I had a hard time finding info on your web site, also could you add a search option for your excellant seeds so I can see if you carry a particular strain I’d like to purchase. I know easier said then done I’m just not wanting to miss out on strains that I may want. Thanks in advance for listening and ilgm is my goto site Thank You professor bergman.

          25. Thank you Robert it just so happens I needed this article so bad it was the exact thing I’m dealing with and now I know the temp is too high and the little nutes are not to little so thanks

          26. I have had no problem with new seeds sprouting but just wont start good root development. maybe should not use miracle grow soil anymore but what is the best ever heard of cola coconut hull hair.

          27. I grew last year with miracle grow and. Molasses to good results. Is anything wrong with using miracle grow?

          28. Sky walker seeds germiinated
            Successful. Started In a glass of water until
            I not a beginiging growth. Then
            Put them In small pot. Transferred to a
            Large container. Growing beautiflly.

          29. Truly excellent customer service. results are good and I will change a few things for greater Yield. genetics are really good. Autos are small for the most part. Northern lights was the exception. It is twice as tall and is slower to fill out.

          30. Mary,

            Lighting is very important to the growth of seedlings. you need a T5 lamp 1-2″ above the sprouts and a small fan to move the stem and strengthen it, in order to keep them compact.It is hard to tell what issue you have with no information to go by. I suggest you join our forum here: We will be glad to guide you to successful growing there. Look forward to seeing you at the forum. 🙂

          31. Aaron,

            NO! Urine must be processed and diluted before being used to amend plants.

          32. Would you recommend urinating in my nutrient solution water for my plants?

          33. Zack,

            This could happen if you give the seedklings nutrients too early. I think you would be better off joining our support forum where we can advise you in a much broader and informed level. We need some more input and a picture would not hurt either 🙂

          34. Yesterday I left my 2 week old aks an when I came to check on them the next day one of my best looking plants is droopy an yellowing started from the tips headed to the center. But all the rest of my baby’s are still bright green an healthy. Any suggestions?O I have them in rockwool in a humidity dome with t5.

          35. Dean,

            What type of soil to choose is entirely up to you. I suggest you find an organic soil made regionally close to you. You can build your own soil also. Perhaps if you join the ILGM forum, we can give you more options. Happy growing

          36. I got my seeds will start to germinate them shortly in Miracle grow starting soil in small containers, when they get 4 to 5 sets I will transfer to 8 gallon containers, what type of soil should I buy? I will be using a green house, I live in a warm coastal climate

          37. Would love to buy some seeds. How? Where? I don’t see any contact information.

          38. I have your autoflower blueberry at the seedling stage. One has just started the second set of leaves. The other looks like the second set started but they look dead. What may be the cause and is there any hope for the second seedling?

          39. ILGM is the best place to visit for information on growing and if you decide to order seeds this is the place to do so! I have never lost an order and EVERY seed i have ordered has grown to be a big healthy flower filled bundle of fun!!! You can’t go wrong with ILGM!!!!!!

          40. kelvin,

            I always start out with hanging yellow sticky traps. If that doesn’t work, I suggest you join our support forum and we can help identifying the pest and can advise you as to how to control them.

            Happy growing 🙂

          41. We usually apply these germination instructions. We recommend putting them in a glass of water for a few days, until they grow a little tail. This can take more than 24 hours in some cases. Make sure the temperature of the water is at 68 degrees and the PH should be around 6. When the tail is out, you can plant them. Also, store them in the fridge with some silica packets or rice as long as you are not using them to keep them cool, dark and dry.

          42. I’m having a problem with the seeds rooting. I’ve watched all kinds of videos and I’m not sure what is the best way to get the seeds to pop.what do you recommend?

          43. Mahalo(thank you)for the seeds…..they arrived promptly. I now have my seeds and am ready to grow my own! Any advice on the growing season in Hawaii? When should I start my seedlings? 1st time grower! Mahalo again!

          44. Zog,

            It is highly recommended that you have 6-8 hours of complete uninterrupted darkness while in the Veg Cycle Photo period.

            Why? Plants need rest just like humans do. They transpire in the dark, and in general photosynthesis is better achieved.

          45. Hi this is my first attempt growing. I think my seeds are doing ok but not really sure. Is there someway I can send a picture and can be told if they are doing good. Thank you for your help :)!!

          46. Louise,

            I am not sure I know what you mean by heading. Ok. Aussie. Reverse Spring to ours. You mention heading, and proclaim all environmental issues and PH, nutrients etc. are fine. I really do not know what to tell you. Again I suggest you join the support forum. We have mates from your area of the world there. They perhaps will have a better understanding of your issue. Thanks, lw

          47. I forgot to mention im from Australia, so we havn’t reached the Summer Solstice yet, days are still getting longer, which is why my early heading is so queer and has never happened before. I thought initially last year it was because i brought plants from a higher altitude down to a coastal one and was warned early heading could happen. This year i bought all the support nutrients/superior female seeds, ready to do much better but it happened again after only a few short weeks. I don’t give up so i started for a again with seed stock id collected over the years from outdoor plants only; and for a third time they are heading. I’m running out of growing season as here its from September to March/April. Have you ever heard of such a problem? Nutrients fine, water fine, light fine.I know im worried about getting into trouble for growing my little medicinal herbs, could i be transferring a negative energy to them? I seriously running out of reasons why and have been growing for 10 years or more.

          48. Bill,

            The best way to help you is to have you join our support forum. You have to read some posts, and stay logged in for at least 20 minutes, You may also need to post 5 replies for security purposes Then you should be able to post a new topic

            Add a picture of your plant. Meanwhile, Download and read our Free Grow Bible. It has a section on nutrient deficiencies, etc.

          49. Please help seedlings with five sets of leaves starting to turn pale between veins & wilting on tips of one plant PLEASE HELP!!! What do I need to do? Thank you billb.

          50. Need help one half week old seedling looking healthy Chem dog out door grow but still on first set of fan leaves been growing for 15 years this never happened to me

          51. Need help with Chem dog seedling on 1 and half week old and still on first fan leaves outdoor grow

          52. Louise

            We cannot tell you what is wrong. All we know is that you are growing outdoors. The amount of hours you get Sun at this time of year is going to induce flowering, because the days are getting shorter.

            I suggest you join our Support Forum. Look in the beginner area for an ILGM Support Ticket.. (You have to read, reply to about 5ts before you can post your own topic. (Due to security). You also need to stay logged in at least 20 minutes. We will be glad to try and assist you once you can post a Support Ticket.

            Does not sound like anything is wrong; You are just in the flowering part of the Solar cycle. Hope to see you around. Peace

          53. elizabeth

            It is time to give your plants a light nutrient solution of 400 ppm. You need to make sure whatever you are growing in is PH proper.

            I suggest you join our support forum for broader advice and support.

          54. Hi Robert i need some advice and help please. Ive been fairly successful at out door growing in a much higher altitude and colder climate. We relocated to a lower, coastal climate that is quite a bit warmer and frost free, all my outdoor plants are heading extremely early, even seeds i brought with me and ones i bought from overseas, i imported. What am i doing wrong? Its never happened before and im very frustrated with my “premature heading” when they are no more than 7′” . Ive bought all the grow stuff and booster, please help and advise. Thanks MWAH

          55. my seedlings from my own seeds, neighbor had male plant which got to a couple of my girls, but anyway my bottom leaves are turning yellow they are 6 weeks old and have about 4 to 5 levels of leaves and are about 12 inches tall under fluorescence light for now, looked great about a week ago now just slowly yellowing the bottom leaves. pot to small ? their in 4×6 plant pots.

          56. Received seeds quick, they all popped and all are female. Just like they supposed to be. Thanks so much for great service and very helpful forums.

          57. Excellent site you have here but I was curious about if you knew of any dcouissisn boards that cover the same topics talked about here? I’d really love to be a part of group where I can get advice from other knowledgeable individuals that share the same interest. If you have any suggestions, please let me know. Thanks a lot!

          58. Awesome blog you have here but I was wondering if you knew of any user dssucsiion forums that cover the same topics talked about in this article? I’d really like to be a part of group where I can get comments from other knowledgeable people that share the same interest. If you have any recommendations, please let me know. Kudos!

          59. Brian.

            You do not feed seedlings nutrients until they 4-5 true sets of alternating leaf sets. I( suggest you join our “Support forum” and start a topic using our “Support ticket” as a guide to the info we need to help you. 🙂

            p.s. It is advisable for you to follow our advice; Otherwise; How can we truly help you learn to grow. Starting seeds ina 5 gallon pot is a bad idea, and a waste of at least 1/2 the medium you are using.

            Hope to see you at the Forums. Peace 🙂

          60. Hi Robert,
            We are first time growers and using Coco and perlite mix. The seeds have germinated and in the first stage of vegetation. We have a grow tent which we have set up with everything suggested including air conditioning. Our question is, should we start feeding them with nutrients now and every time we water them should we do so with nutrients in the water, or only add nutrients on ocassions and just use water by itself. We have used 5 gallon pots and not smaller pots as suggested by you. Any suggestions would be appreciated.

          61. Hi there Robert,
            Greetings from way down under!
            I’m in Tasmania, Australia, my name is Kevin, and I downloaded your Grow Bible a couple weeks ago, it has been a great help.
            This is my first indoor grow, and only my second grow in total. I planted four seedlings in pots of Tomato Potting Mix with 20% Perlite added last October (middle of our Spring Season), and they flowered up very nicely, a good harvest of buds in March! In the past, I worked in plant nurseries for a couple of years, so am fortunate to have some basic general knowledge of plant care.
            In our converted Office 3m x 2m x 3m, we have 11 pants at seedling and young veg stage under a 300w LED grow light, along with a panel heater set to 23C or 73F, a fan running for 15 min’s every hour, and a 3Lt yeast CO2 generator(which may or may not be useless, (-; no harm I suppose.
            The seeds I have are a mixture, collected over the years, I can see that half of the plants are Indica and the other Sativa, a little too early to tell the sex yet, goal is to end up with one girl of each, we’ll be happy with that. Come September, it may be warm and sunny enough to place plants outside, at least during daylight hours, anyway.
            The first 5 seedlings were stunted at about 5cm high for at least a couple of weeks, after reading about lighting, it was clear that I had the LED panel far too close. Once I’d raised the panel from 5cm to 50cm (a big jump) then the plants took off.

            Your book has been a huge help, and I look forward to purchasing some quality seeds from you earl next year.

            Kind Regards,

          62. The northern lights seeds I got from you are all growing nicely. Thanks for replacing the widows that didn’t germ. I do thank you for your great service. I received all my orders from you in 10 days. I am pleased with my purchase.

          63. Seedlings have been an absolute nightmare for me, 99% failure, and the ones that grew (just a little luck I think).
            Very interesting, but sometimes overbearing for us amateur growers, the seedling symptoms seem to tick all of the above answers in my failures, however the biggest problem I have now is getting more seeds from you, need to pay by card lol the system wont except my card?? but thanks for the great advice re-seedlings!

          64. I have bought your seeds and love em but 2 of my white widows are showing signs of a problem. Can I send you drop box address and you look at my video of my girls and advise me?