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What Are The Best And Most Popular Marijuana Fertilizers?


Molybdenum deficiency marijuana plants and how fertilizers can helpBest cannabis fertilizers

In order to grow huge and healthy marijuana buds your plants need the right fertilizers and nutrients. Just like an athlete needs a proper diet to achieve maximum performance level, so does your cannabis. Pump your buds to the max with these fertilizers. You can make your own or buy some in your local garden centre, just make sure you know what your plants need.


Vermiculite And Perlite

Vermiculite and Perlite are two commercial pellet-type fertilizers made by heating mica to 1,400 degrees F. and 1,800 degrees F., respectively. The heating process causes the minerals to expand and become porous; the resulting white pellets can absorb water up to four times their own weight in water, they hold air, and they keep dense potting soils from hardening into solid masses when they dry. The mineral itself provides potassium, magnesium, and calcium that leaches into soil over time to nourish roots. Pellets of either fertilizer are further enhanced by saturating them with a combination of nutrients that are also released over time.

For hydroponic growing, perlite or vermiculite is typically used in a high concentration of 50 percent fertilizer, with the remainder a combination of water and peat moss-proving that it is hard to overfertilize with either product. Soil growers can get by with a much smaller ratio of one part vermiculite or perlite per ten parts soil. Perlite and vermiculite are most commonly sold in 0.4 cubic-foot bags or 6 cubic-foot bales. Download my free marijuana grow bible for more tips about nutrients and marijuana plants.

Marijuana Booster Fertilizers

Marijuana plants require a large amount of nutrients to grow properly and produce flowers. Plants make a variety of nutrients by combining carbon dioxide (CO2), oxygen (O2), and sunlight in a process called photosynthesis. In order to produce the maximum amount possible, however, the plant needs to have a well-balanced and nutritional diet.

Of course, putting a seed in the ground, watering it, and letting it get some sunlight will produce a decent plant, but wouldn’t you rather have a plant that thrives? Isn’t it certainly more enticing to have plants with giant marijuana buds that are dripping with THC? If it does, then you should invest in the right nutrients and feeding schedule. Click here for more information about Marijuana Booster.


When it comes to home gardening fertilizers, it’s tough to argue with a proven formula, and ready-made plant foods like Miracle-Gro have a long track record of success. I’ve watered my own cannabis plants with one or another brand of all-purpose fertilizers for decades, and the results have been satisfying enough to keep me using them. With them the engineering has already been done; all I have to do is mix and apply as directed. Along with water-mixed powders and liquids, there are nontoxic leaf-feeding sprays that some growers like and some don’t, because they may or may not affect how smoothly the cured plant smokes.


Stoners may recall a scene from the movie Nice Dreams in which Cheech complained to Chong that one of his plants was looking a little unhealthy. Chong’s reply was “Piss on em….” There is sound science behind Tommy Chong’s cryptic advice. Nitrogen is a booster to leaf and stem production and is critical to cannabis growth throughout the summer months. Almost as symbiotically, human urine is largely comprised of nitrogen urea, and it has served well for making pot plants thick with leaves for generations. The usual recipe is one bladdernut per gallon of water, sometimes mixed with commercial fertilizers. Do not urinate on the plants (unadulterated urine will probably kill where it touches, for one thing), or onto the ground near a plant; always dilute urine in a water solution, and use the solution promptly to prevent the formation of harmful ammonia.

Wood Ashes

Where I live, the surrounding forests are mostly conifers, and most of those are jack pines. As a result, the sandy soil below them has a very high acid content that can be tolerated by few plants other than blueberries and bracken ferns—even cannabis, which generally likes acidic soils, cannot grow here without assistance. One simple solution has been to deacidify the soil by adding a caustic (i.e., lye) that neutralizes acids. Lime from your local garden center is made for this task, but an old farmer’s trick is to use plain wood ashes, blended in water at about one shovelful per 5-gallon bucket.

Carbon-Dioxide Generators

Probably every middle-school student knows that plants breathe in carbon dioxide, CO2, and exhale oxygen, O2, while animals breathe oxygen and exhale carbon dioxide.

It’s an ideal symbiotic relationship-or at least it was until Homo sapiens decided to pave everything. Just as human hospital patients experience faster recovery times when their lungs are superoxygenated, so can marijuana growth be accelerated in a CO2-rich environment.

Vinegar-Baking Soda CO2 Generator

Probably the simplest carbon-dioxide generator is comprised of nothing more complicated than plain white vinegar dripping slowly—about one drop every two minutes is ideal—into a 1-liter bowl containing ordinary baking soda. The acidic vinegar combines with the caustic baking soda in a chemical reaction that not only renders both of those properties inert but also creates copious amounts of carbon dioxide until the vinegar runs out or the baking soda is entirely neutralized.

Closet growers generally set up their vinegar-soda CO2 generators kind of like an intravenous (I.V.) drip used in hospitals. In its simplest form, a bottle filled with vinegar is duct-taped, hung, or otherwise suspended upside down over an open margarine container, or some other bowl, half-filled with baking soda. A hole punched through the vinegar bottle’s cap using a finishing nail permits its contents to slowly drip from the hole and into the bowl of soda below. I like to extend a small-diameter oxygen-can- nula hose from the hole in the vinegar’s cap, sealing it on both sides with silicone caulk that will prevent the hole from sucking air and causing vinegar to drip too quickly. I like that the hose enables precisely directing where the vinegar drops will land.

CO2 “Bomb” 

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

For this type of generator to be useful it needs to swiftly generate an atmosphere rich in carbon dioxide within a small enclosed space that mostly or completely prohibits escape to the outside. A solution that has been useful consists of covering a plant entirely with a large plastic bag, the length of which is at least sufficient to reach the ground without bending over a plant’s top. Next I place a plastic peanut butter jar or similar jar that is one-quarter filled with baking soda and place the open jar upright under the tent formed by the plastic bag. Then I reach under the bag’s hem and pour a tablespoonful of vinegar into the jar until it begins to foam as it generates CO2. Reseal the bag against the ground, let the plant breathe for fifteen minutes, then add more vinegar to the remaining baking soda, stirring the mix with a stick to ensure that all vinegar and soda have been combined. Leave the CO2-filled bag over your plant for about four hours to thoroughly infuse its tissues, and repeat as you deem necessary.

You cannot give a plant too much CO2, but I prefer to use bombs at night, when there are rarely people around to smell them. I also feel better about covering up my plants at night, when the process won’t deny them vital sunlight.


I once used a mound of frequently turned-over five-year-old sled-dog poop to grow a thriving crop of thirty-three plants, of which twenty-two were females of several strains, with a harvest of 3 pounds of pretty excellent bud. Locals I spoke with were virtually unanimous in their opinion that husky turds would somehow fail to break down, decay, and return to earth, like every other organic material does. But after five years the oldest end of the scat mound looked and smelled like rich, black dirt, and it grew one of the best marijuana crops that I’ve had the pleasure of harvesting.

Basically, if it’s organic it will rot back into soil, taking whatever nutrients the original matter contained with it, available for infusion into the next plant. Composting kitchen waste and other organics normally results in an outstanding soil, and it can be accomplished in virtually any environment. Whether it be a heap in the woods 100 yards from your house or a covered 55-gallon drum on the roof of an apartment building, composting cuts down on a household’s contribution to landfills and generates a good supply of rich soil for growing in habitats where native soil is poor-or nonexistent.

Once you’ve established a compost heap, begin another while the first is left alone to decompose. Frequently—daily, if possible—turn the compost with a pitchfork until the contents are well mixed. This helps to maxi- mize decomposition, to keep its progression even throughout the mass, and to minimize transition time from rotting organic to black dirt. Frequent turning also helps to prevent spontaneous combustion, a phenomenon in which heat generated by microbes feeding on damp, decaying material under pressure becomes sufficient to dry, then ignite the very material that created it. Soft tissues—tomatoes, old hamburger, gone-bad potatoes— rot the quickest and fastest in hot weather, but under ideal conditions, expect your compost heap to take at least three months to become usable soil.

Note For Indoor Growers

Having highlighted the importance of proper nutrition to growing a kick-ass crop, I must also point out that, like spider mites, malnutrition is most often seen in closet crops, where root and living space is confined. Just as natural predators and the elements keep spider mites under control in the wild, so does runoff from rain bring in organic and mineral elements to periodically refresh the soil around in-ground pot plants.

When you pull up your marijuana plants at harvest, you’ll note that fine white root tendrils have spread from the original potting soil to draw sustenance from the natural soil around it, even in stony soil where a plant without potting soil wouldn’t grow. The richest potting soil is sure to be depleted of nutrients as a plant grows, starving it to death, but outdoor growers in many places can get away with using no fertilizer at all.

If you want to start growing, download my free grow guide and order some marijuana seeds. All top quality marijuana seeds are available in my marijuana seed shop. We ship seeds to the US, CA and many other countries. For any growing related question please visit the marijuana support page.

Source: ILoveGrowingMarijuana.Com



About Author

Robert Bergman is a master marijuana grower. Robert Bergman is the author of 'Marijuana Plant Care' and 'The Marijuana Grow Bible'.


  1. Hello,
    I’m extremely new to this s well. I did however study horticulture for 3 years but not a know it all here either. Just curious……I wanted to experiment with an unknown seed that was given to me ok….I planted it 2 weeks ago and the plant is now about 8 inches tall with a nice thick stem. I have not given it anything to eat at all yet. It looks really healthy and green, but when I transplanted it, I noticed the top of the plant(new leaves) turning yellow. In the past couple days it seems to have corrected itself somehow. If it was your plant, what would you feed it now ! Oh and I have a pretty decent lighting situation as well….nothing fancy, but seems to do the trick so far. What kind of light cycle ? I have been turning it on at around 5am and I turn it off around 10pm. Does that sound like a good idea ? Thanks to all on here. Very informative especially for a greenhorn !

  2. Thanks for taking the time to respond with the in depth info Chris. It’s much appreciated.

  3. Chris Parodi on

    Hey, whats up, haha yea I do like talking plants, takes my mind off the other BS life has to offer. It sounds to me like u have a pretty good grasp of things. Are you growing indoor or out and if indoor hydro/soil/lighting? I would start off using something along the lines of miracle gro quick start, which I believe is a 4-12-4. It is very important in the beginning to develop a good root system. A little trick (sounds kinda gay, but works) is to remember up-down-allaround when it comes to ferts. as in n=the greens, p=roots/flowering and k=overall health of plant. For vegetation stage you could try something like miracle gro orchid food, which is a 30 10 10. As far as transitioning goes, some people like to do a 50/50 of the fert they use for veg and the fert they will use for flowering before making the switch, same goes for starting fert going into veg. This will lower any risk “upsetting” the plants feeding process. A lot of people don’t realize the importance of P during the beginning phase and think its ok to dose only during flowering. Many times, these people end of with plants that are a full stick of dynamite with a quarter inch root. This my not cause any problems throughout veg, but when time to flower, the plants could really use a nice root system due to added weight and added demand for water/nutes. When it comes to K, it is nice to bump it up a little before flowering as well as during, as it can help promote flowering and helps the plant with overall noot intake. It is OK to mix and match ferts, it really is simple math. mix a 10-2-10 with a 6-4-4 and you get a 8-3-7 as long as you dose 50/50 based on directions. But, to sum up what I said, strong P until roots begin to develop nicely, strong N for veg then back to P. K should be increased 2/3 way through veg. Just browse around home depot/lowes and look for ferts with ratios that would work for you, don’t matter what the front of the box says, all that matters is that ratio. When it comes to additives, check out a product called superthrive, cost like 10 bucks at the depot/lowes. Been around forever, and is highly regarded in the growing of ornamental plants and I see products in the pot world that are basically knock offs with a leaf on the box selling for 3-4X that. It is a basic vitamin additive. That may work better then hormex, which I believe is a rooting hormone (could be mistaken). Rooting hormones good for very early stages, then a switch to something like superthrive for the remainder of the plants life. Sorry, probably rambled on, its late and I’m spun and burnt and should prolly crash. hit me back any time.

  4. Hey Chris, you said that you like to talk plant and it seems like you know what you’re talking about, so here are some questions that I’ve always wondered about. Those three fert numbers that you mention above I understand are for nitrogen, phosphate and potash respectively. Can you give me the percentages that you have found best for veg stage (I’ve used Miracle Grow, 26-3-12) and also for flowering stage (I’ve used 10-30-10)? Is there a combination of numbers that is good for transitioning at the time you cut the light hours back and jump start the flowering cycle or is it as simple as changing to the “bloom builder” numbers listed at the same time you cut the light hours? Is it good to use something like Hormex (B-12 I believe) throughout the veg growth of the plant or should that be something to use exclusively for transplanting? Thanks for taking the time to answer.

  5. Hey Robert. I read your comment about the “Co2 Bomb” and would like some verification. You said that you cover your plants at night and bomb them with Co2. I was under the impression that plants need OXYGEN at night and carbon dioxide during the day. Can you clear this opposition of information?

  6. Chris Parodi on

    vermiculite and perlite are not fertilizers, they are substrates. perlite used to loosen soil/prevent compaction and help with drainage while vermiculite is an inorganic medium used for starting plants off due to the fact that it is easy to root in and retains moisture very well. Perlite is added in most potting mixes at a ratio of about 10 percent. Vermiculite is a replacement for coconut fibers when starting of young plants from seed. THC boosters are a load of crap. Organic fertilizers are a load of crap, they are dirty, they smell and unused nutrients cause levels to spike. All fertilizers have three percentages on the back of the box. nitrogen, phosphate and potash. There is a ratio such as 10/10/10, meaning all levels are equal. You can use a fert like this throughout your entire cycle, it will work. For best results, feed high in potash for roots when starting off to build foundation, switch to a balance during growing, and a high nitrogen and phosphate when budding. DO NOT spend 100 bucks on miracle grow with a marijuana leaf on the bottle. save 92 bucks and buy the shit with the tomatoes on it, LOL. If you want to add a nutrient, buy superthrive, its 10 bucks a bottle and has been around for almost 100 years. It contains additional vitamins and minerals. Chemical ferts are the way to go, easier to dose and way cleaner. I come from a background in bonsai and aquaria, we made many of these same mistakes, wasted a lot of money. Lesson learned was a plant is a plant, modern farming=modern results. feel free to criticize me or ask me a question, I love talking plants.

  7. Chris Parodi on

    the problem with “muck” is that although high in nutrients, can very easily cause root rot or prevent free drainage in your soil. what I’m about to say might cause some debate, but you best off using a controlled growing environment with chem fertilizers. I do not come from a marijuana background, believe it or not my experience in horticulture comes from bonsai and aquaria. In bonsai we made many of the same mistakes that weed growers are making now. For some reason when it comes to gardening anything, people tend to revert back to ancient techniques. If you truly want to learn how to grow proper vegetation, simply apply modern gardening techniques. For outdoor marijuana I would use a raised bed. Use a mixture of sphagnum peat moss, perilite and Diatomaceous Earth. Make sure your peat is sphagnum peat, not that cheap shit. This will allow you to feed heavy and water heavy without having to worry about overwatering. The soil blend also makes gases flow freely. The DE and Sphagnum Peat will retain moisture in case you miss a day. You will be able to feed without having to worry too much about overfeeding, the fast draining soil can easily be washed out to rid fertilizer of plants show sign of burn. I don’t know why people don’t apply these methods to outdoor weed growing more frequently. Yields would be fantastic, you would be utilizing the power of mother nature while applying techniques used mainly for indoor aeroponics. One thing I will add that a lot of people do not know. Many people see hydroponics and automatically assume that it is ok for their plants’ roots to be constantly soaked. This is only OK in hydroponic growing due to the fact that you are injecting the water with oxygen/circulating it and keeping it rather clean. The roots of plants in nature do not like to have wet feet, this will cause root rot, which actually PREVENTS the plant from absorbing water. Also, for indoor growing, save yourselves the headache and invest in a paintball tank and a cheap regulator. That will solve all your c02 problems. I don’t consider myself a know-it-all by any means. I have just started to dabble in this type of “gardening” myself. But one thing I know from past experience is that a plant is a plant. I see a lot of ancient techniques being talked about on these forums, and a helluva lot of marketing. Get a modern substrate (fast draining, decent water retent, doesn’t break down/gunk up), chemical fertilizers and read about modern farming techniques.

  8. Hi Robert
    I read the free eBook and I just wanted to add that I like the Organic seed booster and Organic foliar nutrient fertilizer from Farmer Discounts.
    Great Results
    It’s Organic
    It’s high Quality
    It’s easy to use
    It’s Cheaper. A lot cheaper.
    I think it’s at http://www.farmerdiscounts.com

  9. A friend of mine has been using some stuff called Active Bio Juice and told me he is getting around 6 pounds per cubic yard pot. Not 100% sure what it is or how it works, but he has sworn by it. I am not a grower, nor have I tried it. I think it is at activebiosystems.com

  10. Anonymous Grower on

    Dude….Vinegar and baking soda is not the only way to make CO2. Use sugar and yeast. Much easier and you don’t have to create a drip system for it to last weeks. Sugar and yeast has no smell.

  11. gotdemgoodbuds on

    I used bat guano made by fox farms, and grew the worst crop I’ve ever grown. All it produced was a main stem with very few small limbs. The only bud was the top. My plants looked like an indian spear, pointing up. I spent a fortune, and got very few buds. In my opinion, bat guano is not the way to go.

  12. I grow outdoors, close to a beaver pond and marshland. I was thinking about using some of the soil, or possibly a tea made from it, that is along the edge of the pond. It’s a very dark, almost black soil packed with organics and a hint of a swampy smell. Just wondering if anyone has tried using some of that kind of super-muck in their growing, either as a soil additive or for making a fertilizing tea, and wondering if it is either recommended or completely discouraged. I’m hoping it will be beneficial, considering it’s such a plentiful, natural, free resource on site!

  13. I think that a gram per watt is a very good harvest. I prefer not to use co2 because it is a greenhouse gas and I don’t think it is necessary. By the way 1 gram per watt is very good, I have heard some LED light manufactures promise that as a selling point.

  14. You are welcome, always happy to help.

    For a flush the simple and easiest thing is H20! But I always used to use Budswell from the Guano company. Very Low NPK, but that has been removed from CA shelves as of last year. I suggest to people Killer Tea from Humboldt County’s Own because it is similar worm/bat guano tea. The best thing is brew your own compost tea and apply that. Compost tea can be alive with beneficial bacteria and nematodes which improve soil health for many years to come. Study up before you do however because compost tea can also brew hamrful bacteria as well.
    Trichomes will appear as early and remain throughout the entire flower cycle. Each strain will also change at its own pace.I suggest getting a 30x to 100x magnifier and examine the trichomes. Wait until the trichomes change from clear to cloudy, and then wait until 50% of the trichomes turn amber. Take a look at this link for more help.



  15. I would read the fox farm labels carefully. Examine this which is printed on the label of the Bush Doctor SledgeHammer from Fox Farm’s Dirty Dozen. “This product contains substances known to the state of California to cause cancer”
    That is directly off the bottle. Seems to me like this is a major contradiction for the use of medical marijuana. Follow me @707Homesteader

  16. Willis you absolutley need to wash it out! I suggest setting the tent out and wiping everything inside and out with a 10% bleach solution. Male pollen is a liability to you and all of your neighbors. That being said take precaution and everthing will work put fine.

  17. Hey bud foil is bad less than ten%reflects white paper would be better but poly white or mylar for me with 2 600s was like adding 400 watts I got 350 grams more when I went to smart pots and reflected my walls and the co2 is expensive look at some dri ice blocks under your plants also I use the dirty dozen through Foxfarm for my medical patients some of them like when I use the technaflora starter kit that has everything in it and if you only have 10 plants you might be able to get away with using it one time I’m telling you they are the same except earbuds are thicker with the technaflora there longer with the Fox Farm try it out

  18. If I get a used tent that had a male grown in it, do I need to wash it out or does pollen have a life span ? thanks.

  19. If I get a used tent that had a male grown in it, do I need to wash it out or does pollen have a life span ? thanks.

  20. Veg room just light warrior and perlite and a little bit of organic humus and clovers believe it or not clovers give nitrogen all the way to your plant for cuttings I use aloe right out of the aloe plant itself the good that you squeeze out it’s great 7 to 10 days you have rooms with rapid rooters or plugs as long as they stay wet I have a 125 CFL and a 90 watt ufo triband in veg room 150 hps for heat but my Medical state only allows us to grow 50 plants so why not grow 20 then nobody bothers you and always have 5 mother’s going see you can buy them at any time you needed thanks for everything guys the check into the clovers and the aloe for cloning I’m telling you if you want to be organic is the way to go look at YouTube Man dodo organic nutrients without a bottle and something should come up a hippie guy with glasses on do it he does and puff on guys and girls and let’s get this thing totally legal not just halfway

  21. in my flowering room I run two 600 watts with 20 plants in 5 gallon buckets well smart pots if I use the technaflora starter kit for $37 that’s actually good for one good Grow or if I use the Dirty Dozen through Foxfarm I get the exact same thing a gram per watt but I also use one-third happy frog one-thhummus and worm the rest perlite organic hummus and worm s*** remember feed your soul oil not your plantsI noticed with the technaflora the sugar daddy i tracks ants but you have to weigh how good your final product is and I’m telling you as a 17-year grower it is a good product and it is way underrated

  22. Mr puff foil only reflects 8%of light use white gloss paint it’s 75% mylar is 95 poly white like 75 but foil no go man

  23. I have 2 600 watts 1 I power and one raptor that’s like 5 years old and a hanging 125cfl in flower room,the sell lamps at Lowes that go in to normal sockets and put off 3900 lumens for 5 bucks anyway I have a flow wing 125 and a ufo90 tri band led and a 150 mini hps I use for heat sometimes but just the 125 watt 5000k and the led can take care of well over 20 plants in 3 gallon pots I do use smart pots for flowering only they are great when used with the fox farm dirty dozen, don’t just use the main 3 the 12 pack it 100 it’s worth it but I also use the recipe for success starter kit through technaflora and I always end up ordering extra sugar daddy or just using molasses but I use a mix of happy frog, ocean forest, a ton of perlite a little bit of organic humus really cheap at Walmart right now dollar 50 a bag and 1 bag last you 20 plants and a little bit of a earth worm castings with those directions right there keep your head at 72 you needed it 50 you will grow with the best of them I promise

  24. I need help with my plant . This is my first time and i don’t know what to use to fertilize my pants. I have outdoor plants.

  25. Has anyone tried the fertilizer “Mystic Gro”. It think it is a new one. Here is their website: mysticgro.com

  26. I think there are two thing to consider:
    1. Mycorrhizae: These are fungi spores that attach themselves to the roots and act as smaller micro-roots delivering nutrients and water to your roots and plant. They are part of a healthy Rhizosphere. Try Mykos from Xtreme Gardening. You apply the endo-mycorrhizal spores directly to the roots during transplanting. Certified organic.
    2. Beneficial Bacteria: healthy bacteria and beneficial bacteria are combatants of pests, mold, and are the delivering system of essential nutrients. Consider Rhodopseudomonas Palustris, this bacteria is a Nitrifying Bacteria and fixes nitrogen from the atmosphere to increase your plants efficiency without it expending energy to transport nitrogen through the roots. Beneficial bacteria devour nutrient lock in the soil and deliver them to the plant. Try Quantum Light as a bacterial inoculant, this increases soil efficiency without adding fertilizer.

    Both of these two thing will prevent plant dehydration, stress, and require you to use less fertilizer. I also started a twitter @707homesteader for people who need any help in their gardening.

  27. The cannabis plant can and will only breathe in the CO2 during the lights on periods.
    Many plants if not all of them follow this same routine as it takes in and metabolize’s the co2 during photosynthesis.

  28. Everything I’ve read here makes perfect sense, and has helped increase my knowledge. Thank you for that. So HIGZY, go screw yourself you twit.

  29. Thank you
    I’m I first time indoor gardener , I’d appreciate some flushing suggestions, how long is the process when tri clones start to change color,from clear to ready?

  30. Is there anything you can mix with your water to increase yield or potency? It would have to be organic (garden rules). I don’t mean a specialized mix, I don’t have access to that… It’s outdoor in high altitude equatorial climate… anything you could help with would be awesome. cheers.

  31. Hi Sarah,
    It depends on what kind of Marijuana you want to grow. If you are looking for something that will directly assist in Cancer patients I would recommend finding ACDC, Catatonic, Harlequin, and Charlottes Web. They are all rich in CBD’s which is known to slow cancer cell growth and assist in pain. For something more THC focussed I recommend Girl Scout Cookie or San Fernado Valley OG. If you are a beginner and would like something more durable I suggest Blue Dream, or Green Crack.
    Definitely also recommend growing soil, Black Gold, in 30-200 gallon Smart Pots. Good Luck!

  32. “I prefer to use (cO2) bombs at night.” ???

    …And with that said; I know you have no clue what you’re talking about.

  33. Hi,
    I am a first time grower starting up in Palm Springs CA. I would like to do a non profit helping hands, What seeds are best for outside? I want 8-10 start up plants, What growing method is best…..

  34. Oscar Baltodano on

    May I ask a question? When growing outdoors in a south Florida climate what time of year is best for planting?

  35. HumboldtHomesteader on

    I recommend transplanting as soon as your roots reach the bottom of your planting container and are established enough to transplant safely without destroying the root structure. Ocean Forest is a good soil, nice choice. I think CO2 is over kill for a beginning grower. It is complicated and more expensive than it is worth to run. Worm casting is a great soil amendment and will increase your plants ability to uptake nutrients. I would turn over into the bloom cycle when the plants reach 12-18 inches in height. Longer you growing cycle the more chance you have of allowing mites or mold reach these plants.

  36. HumboldtHomesteader on

    Bat Guano Is essential and a great fertilizer for early and late bloom. A great late bloom fertilizer containing bat guano is Fox Farm Big Bloom.

  37. HumboldtHomesteader on

    I recommend a few fertilizers. Primo Aminos for Veg, Age old bloom for early flowers, and Fox farm big bloom for late flowers. This a good start for the beginning grower. Try and stay as organic as possible to maintain long lasting healthy re-usable soil.

  38. HumboldtHomesteader on

    Black Gold Potting Soil is the best foundation for soil. Soil is the most important ingredient. Sunshine # 4 is the same soil in compressed 3.8 cubic foot bails for the larger scale grower. Large 3.8 cubic foot bails are the most economical for of potting soil with out purchasing bulk soil by the truck load.

  39. I’m a first time grower, 6×6 foil walls 600 watt HP’s, 4 blue light spectrum 4 ft florescent bulbs mounted to side wall 2 on 2 different walls,fan, dehumidifier, 25 lb co2 tank,… .50% Pete 40% organic((1/2 worm casting mix and 1/2 fox farms ocean organic)). Rain water,I only plan on fertilising when to flower, with a water bat guano mix….. . I got 10 white widow seeds from seedsman, and 1 free exodus cheese……to my amazement. All germinated less than 72 hours, and all 11 sprouted have been under flurocent light at 78/degree temp 24 hrs a day for for 7 days they are all I thin stalk with leaves on top last one sprouted today, first one 5 days ago range from 1/4 inch to almost 2 inches. . …now my questions. 1 when should I move to 5 gallon pots, should be minimal shock same soil and I sprouted in jiffy pots. And when do I move to 600 watt hps. And 18. 20. Or 24 hrbof lite, and how long about or veg stage, I’m in no great hurry, id like a good yield…I hear anything from 3 to 8 weeks any opinions

  40. I want to start growing but I was woundering what is the best soil and fertilizer to start with or what is the best fertilizer kit to get for beginning to end

  41. HumboldtHomesteader on

    you will be fine, plants in veg or bloom will need nitrogen, phosphorous, and potassium as well as 14 other ESSENTIAL macro and micro nutrients. a plant is only as strong as its weakest link, if you are missing one of these nutrients you will have problem

  42. HumboldtHomesteader on

    Wow that was the most retarded thing I have ever read. Take it from a a born and raised Humboldt county local. don’t feed your plants miracle grow. dog poop? really? I cannot believe what I am seeing. ask any question amateur growers here and I will tell you what to do to get exactly what you need. take it from an old dog

  43. I accidentally put a bloom fertilizer in my vent tent plants last night. Is it going to hurt them??

  44. Most growers are totally unaware that the secret ingredient for top shelf buds is Sulfur and the best nute for the job is Jack’s (JR Peters) Citrus FeED for veg and AquaGold for flower. The Citrus has 4.9% sulfur and the AquaGold has 9% sulfur

    Think I’m wrong, try it

  45. Billy this is a keyword article that is written to generate SEO ranking. Hence the brand names etc.


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  47. Feed the soil and it will feed the plant. It matters not what you’re growing…marijuana, peppers or marigolds… if you nourish the soil with good organic substances like Humboldt Billy has suggested then for the most part you will only need to water it throught its vegetative state. Then upon flowering incorporate an organic phosphorus additive like a tea or store bought like foxfarm Bigbloom which in my experience i find works great. Also use combination of seaweed and fish ferts and you will have amazingly healthy producing plants. All plants are living feeling beings. Marijuana is one of the most selflessly giving plants … honor it by nourishing its growing environment… the plant will thank you by producing an abundant crop.
    Robert is may better serve you and this community to read up on the new and improved ways to gardening. :-)

  48. Humboldt Billy on

    Hey Robert, This article is way off base for the most part. Organic fertilizers like bone meal, blood meal, fish meal, chicken manure “if composted” seabird and bat guano’s worm casting, alaska humus, greensand. AACT compost tea made from these fertilizers is amazing

  49. this is worse than garbage, follow this advice and you will get no where. Jesus, even a hydro store employee is more informed.


  50. Just an FYI, on my first noob grow, I used Miracle Grow liquid plant food (the 9-9-9) exactly following the directions and got nute burn and lockup like a mofo and almost lost my crop. It was my own fault for being cheap, and I learned quick, and do NOT recommend MG at all. I was able to recover by flushing with tons of bottled spring water (reverse osmosis filtered). Lost some leaves but plants survived barely. I did also try the Miracle Grow Flower Food (15-53?-15)(the purple box of blue granules) on a flowering auto at half strength, and that worked kinda okay, but still had to flush regularly when it showed lockup. From noob to noob, don’t use Miracle Grow.

  51. I can’t believe that someone would actually suggest Miricle Grow and human urine! I have a small organic fertilizer company in So. California and spent years developing truely organic fertilizers for cannabis (both dry and liquid) from mealworm castings. My target market is home growers who care about their health and only want to ingest organically grown mj. Most, if not all fertilizer blends that are offered for cannabis contain chemical elements and/or even toxins. I will name a few – bat guano, blood meal and bone meal. While they are identified by the FDA as “organic” in reality that can really put a hurt on you: both bone and blood meal these days come from slaughterhouses and are loaded with antibiotics, growth hormones and steroids. Even human “biosolids” from sewer treatment plants are considered “organic” by the FDA, and believe it or not, many commercial farmers in this country use it regardless of the toxin levels it may contain! Why? ITS CHEAP TO BUY and does grow well – if you don’t mind polluting your body. Bat guano has been used in cannabis fertilization since the 60’s . . . there are so many associated diseases with bat guano I would bever touch it much less use it on anything I plan to actually ingest. By the way . . .remember Mad Cow disease a few years back? BONE MEAL was the cause! Even ORGANIC GARDENING MAGAZINE strongly advises gardeners not to use blood meal, bone meal or bat guano. It’s simply not worth the risk!
    Mealworm castings however, are not a blend and are pure as the driven snow. mealworms are fed wheat bran and raw carrots . . . and is not really a worm at all but the larva stage of the darkwing beetle. Not only does it have a natural NPK of 4-3-2 it also has 15 micronutrients to feed the soil and the plants.
    I have developed a FOLIAR SPRAY from mealworm castings (not a tea) and have a patent for this unique process. The point is using a foliar spray on the leaves and buds and the dry fertilizer for the roots you not only get healthy growth but a lot of it!
    People like Johnny should visit my site and use the Facebook link to find out the good, the bad and the ugly things you can do to yourself using harmful fertilizer. I can be emailed there at rainbowfertil@aol.com and the site is: rainbow-farms-fertilizer.com
    I personally don’t care if you use cannabis for medical or recreation . . . the point is is you can grow safe mj, then why fuck around with chemicals that can actually kill you?

  52. Humboldt Star on

    This is true , I cannot believe this king of ignorance was printed, Mr Bergman amazes me with some of his advice, everything from miracle grow as a good fertilizer, to stuff like the mistakes in this article. Surely Johnny and Jay could draw from better resources to share, I know they have the best of intentions and I am thankful for the time and energy they put into this website

  53. Strange, because some of these are not fertilizers at all. Some good tips, but misleading. I take offence at the mention of miracle grow though. I used miracle grow when I was 16, and would never use it again. It’s toxic chemicals, and defeats the purpose of growing yourself. Might be high in phosphorous, but other than that it is horrible. The only time I’ve ever really had nutrient burn is from miracle grow. Also good to mention that urine is a source of high NITROGEN, which could be somewhat useful in vegetative growth, but should probably not be used very late in the season. High nitrogen can cause problems in flowering. To be honest, this seems like an excuse for an advert for “marijuana booster.” A post like this with no mention of Pure Blend Pro is surprising. Grow organic or don’t grow at all.

  54. Closet smoker on

    A couple good tips, but mostly tripe. Miracle grow is is commercially hyped garbage. No mention of fertilisers actually used by most successful cannabis growers. Johnny, you are going to loose readers with articles like this.

  55. Doc Deadhead on

    don’t mean to troll here but………..plants don’t take in CO2 during the dark cycle

  56. Neither vermiculite nor perlite are fertilizers. They’re growing media or soil improvers.

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