You are viewing all Organic Growers Supply products related to “Cannabis Growing Supplies.”
Join the carbon-farming revolution. Biochar is the product of heating organic matter in a low-oxygen environment: instead of releasing the carbon...
read more
(2-2-2), 16% Chitin. As if “darkling beetle” didn’t already sound like the nightmare invention of a fantasy novelist, the manufacturers of this...
read more
(0.5-0.5-0.3 avg. and trace minerals) Research at Ohio State University indicates that adding 10–20% worm castings by volume to potting mixes...
read more
(Approximately 4-4-0, approximately 18% Ca). A nutrient-rich byproduct of crab processing facilities. As well as being an excellent source of...
read more
(13-0-0) One of the fastest release times of all organic nitrogen sources. Highly recommended for corn. The smell (understandably) freaks out
... read more
(0-16-0, 32% P2O5, approx. 30% Ca) Burned bone meal provides large amounts of readily available phosphorus. The most economical source of P for
... read more
(0-0-52) The most economical source of available potassium. Moderate to fast-release. If your soil has sufficient magnesium, this is the potassium...
read more
(33% CaCO3) When the price of aragonite spiked a few years ago, we tried to steer growers toward the chemically identical Calcitic Limestone, but...
read more
(0-0-0.2, 1.8% Ca) Named for its A-to-Z of Minerals including Trace Elements; contains over 67 minerals beneficial to plants and animals.
A mix of
... read more
(0-0-0.2, 5% Ca) Named for its A-to-Z of Minerals including Trace Elements; contains over 67 minerals beneficial to plants and animals.
A mix of
... read more
(0-0-0.2, 5% Ca) Named for its A-to-Z of Minerals including Trace Elements; contains over 67 minerals beneficial to plants and animals, including...
read more
(49.3% SiO2, 13.3% Al2O3, 9.2% CaO, 5.7% MgO, plus trace minerals) A paramagnetic stone powder from the Pioneer Valley of Massachusetts for...
read more
(0-7-0, 20% total Phosphate, plus at least 30% Ca and 10% SiO2. Natural phosphorus source from mines in British Columbia, Montana, and Mexico....
read more
Contains about 5% potassium in very slow-release form. Plants need potassium for sugar and starch production. Granite meal can be added to the...
read more
(Calcium Sulfate CaSO4•2H2O, 21% Ca, 16% S) Gypsum is a good source of calcium when the pH is already at a desired level. The sulfur in gypsum...
read more
(9.8% water-soluble Mg, 12.9% S) Magnesium is a building block of chlorophyll and therefore essential to efficient photosynthesis. In...
read more
(0-3-0, 21-25% total P2O5) 40% CaO. The consistency of rich soil. Comes from the washing piles left behind when high-grade ore was extracted to...
read more
Pro-Select Prill (87% CaCO3, 7% MgCO3). Cal Carb Equivalent 95.8%. The most common and most frequently used soil conditioner. Calcitic is the...
read more
Pelleted Dolomitic Limestone (57.7% CaCO3, 33% MgCO3). Cal Carb Equivalent 96.9%. The least expensive liming agent. Use to sweeten soil (raise pH)...
read more
(4.6-0.9-1.3 avg) We’ve lost count of how many hemp and cannabis growers have asked us about carrying karanja cake. Your wish is our command! Made...
read more
(6-1-3 avg) Pure full-strength neem cake—the residue of neem seed kernels after the oil has been pressed. Rich in the basic nutrients, nitrogen,...
read more
(2.8-0.5-3.6 avg.) Popular among veganic gardeners, and hands-down the best-smelling fertilizer out there. Excellent alternative to blood meal as...
read more
Plants and beneficial microbes have a sweet tooth, too! In addition to its sugar content, molasses is a source of important nutrients, including...
read more
(NPK: 0-0-4) New formula is twice as concentrated as the liquid kelp we carried for years: higher price, but you need only half as much!...
read more
Kelp Meal for feeding to livestock or amending soil.
Livestock: Kelp is an excellent source of iodine and vitamin A and provides lower
... read more
NPK: 0-0-18. Highly concentrated extract makes an excellent foliar spray containing growth hormones, trace minerals, enzymes and carbohydrates.
One
... read more
(7-1.5-1 avg.) High levels of nitrogen and potassium are released as the soybean meal breaks down, providing fertility over time. Add when first...
read more
A high-octane well-balanced blend to fuel your grow! This fertilizer and amendment mix includes all the goodies contained in our well-loved ...
read more
(3.4-2.2-3.5) An excellent all-purpose fertilizer for those who prefer to avoid animal products. Great for flower bulbs because it won’t attract...
read more
A premium high-test potting soil. Formerly branded as GreenTree Ithaca Blend. Coir, sphagnum peat, and worm castings form the base of this...
read more
Extra Rich Soil Conditioner for Flower & Vegetable Gardens. Blend of compost, peat, aged bark and crab meal. Rich in micronutrients. Ideal for...
read more
This premium washed low-EC coconut coir is a biodegradable and environmentally sound substitute for peat moss. Compressed blocks of coconut fibers...
read more
This top-quality compost, made in Sidney, Maine, comes highly recommended by farm advisor Mark Fulford. The lab results we saw showed strong...
read more
A great alternative to perlite in your growing medium—carbonaceous, renewable and less dusty to mix. May be included at up to a third of your...
read more
Blond sphagnum peat, compost, vermiculite and coir with a blend of organic and mineral amendments. Widely used by growers who make soil blocks....
read more
Sick and tired of poor yields from your container-grown cannabis or hemp? Ahoy, matey, this flowering and fruiting mix is for you! Once plants are...
read more
Trifolium repens Perennial legume. Up to 4-8". The lowest-growing clover. Shade- and traffic-tolerant perennial. Our most popular clover. Seed at...
read more
You told us your dreams, and we designed this very diverse multispecies clover-heavy mix as a soil-building living mulch for use under...
read more
Microbial Inoculant Concentrated Effective Microorganisms®. Active microbial life in the soil and on plants is a better solution than synthetic...
read more
(4-4-0.5) We were devastated by the demise of well-loved MPM (Microbial Plant Mix) foliar fertilizer, the proprietary blend of a manufacturer...
read more
Four species of endomycorrhizal fungi, 7 species of ectomycorrhizal fungi, 5 species of beneficial bacteria. About 90% of plant species form...
read more
Fulvic acid is a powerful antioxidant and chelator: one molecule can transport 60 or more minerals into plant cells for a more efficient and...
read more
A dry soluble powder with humic acid concentration of 85%. Derived from the mineral leonardite.
Humic acids are the wild-card molecules of soil
... read more
For anyone who changes or moves hoses on a regular basis, this nifty attachment is a lifesaver! Rather than having to screw and unscrew your hose...
read more
This listing is for 1 male piece only. We also offer a 2-piece set. For anyone who changes or moves hoses on a regular basis, this nifty...
read more
Garden row-crop kit for 200' of irrigation uses low-flow drip tape for a uniform distribution of moisture along the tapes. Includes setup...
read more
by Doug Fine, 309 pages, 6x9, softcover. A must-read for anyone considering—or already knee-deep into—the cannabis industry. Fine covers the...
read more
by Tammi Sweet, 144 pages, 7x9, softcover. Practical, clear and wasting not a word, this guide is a perfect tool for anyone new to world of...
read more
by Dale Strickler, 352 pages, 8x10, softcover. It’s hard to find books that cover soil science and stewardship in a way that engages laypeople....
read more
by Eric Fisher, 256 pages, 7x8, softcover. Finally! A guidebook on compost teas that goes well beyond the bubbler. Drawing on a variety of...
read more
by Nigel Palmer, 208 pages, 6x9, softcover. Science nerds, rejoice: this book dives deep into the chemical and biological workings of your garden...
read more
by David Deardorff and Kathryn Wadsworth, 192 pages, 7½x9½, softcover. The only book dedicated to a single species in the widely popular “What’s...
read more
by Tammi Sweet, 272 pages, 6x9, softcover. This book has something for both the cannabis-naive and the cannabis-savvy. Whether you want to make a...
read more
Molasses is a common and cost-effective feed additive used for many purposes. Add it to your animals’ drinking water in cold weather, where it...
read more
Hooray for the release of this OMRI-listed heavy duty paper mulch! Reclaimed cardboard, 100% bio-based, biodegradable/compostable, it blocks weeds...
read more
Hooray for the release of this OMRI-listed heavy duty paper mulch! Reclaimed cardboard, 100% bio-based, biodegradable/compostable, it blocks weeds...
read more
The magical medicine plant strikes again! These hemp-fiber squares block weeds and preserve moisture around the base of your young trees (they...
read more
After our mammoth multi-year search for a high-caliber plant-based fungicide and insecticide, the thyme has finally come! For use on cannabis and...
read more
A copper fungicide for the home gardener. Copper is a very effective fungicide, but regular use may result in problematic concentrations of copper...
read more
Why, oh why do we have so much trouble keeping Bacillus subtilis products on the shelf? We had to nix Serenade because we don’t want to give money...
read more
Broad Spectrum Foliar Fungicide. A potassium bicarbonate formulation to prevent powdery mildew, Alternaria blight, Anthracnose, black spot,...
read more
Bacillus amyloliquefaciens formulation for broad-spectrum control of bacterial and fungal diseases on vegetables, fruits, nuts, ornamental trees,...
read more
Water dispersible. A dry formulation of the bacterium Chromobacterium subtsugae. A GRAND addition to your pest-fighting arsenal. Reduces plant...
read more
When the squash plants are eaten halfway to the ground or you can’t see the rose bushes under the layer of Japanese beetles, it’s time to reach...
read more
A blend of iron phosphate, a naturally occurring soil mineral, with snail and slug bait. Many species of snails and slugs are attracted to the...
read more
Pyrethrin is a botanical insecticide derived from a chrysanthemum, Tanacetum cinerariaefolium, grown in Kenya and Tasmania, with low toxicity for...
read more
for Trees, Shrubs & Vegetables Concentrate II. Liquid concentrate Bt (Bacillus thuringiensis subsp. kurstaki) Labeled for a variety of caterpillar...
read more
Biodegradable contact insecticide effectively controls mites, aphids, earwigs, lace bugs, leafhoppers, mealybugs, scale, spider mites, thrips,...
read more
Eastern tradition and Western utilitarianism meet again! Enlightened growers of veggies, fruits and medical ganja value karanja oil for its...
read more
Promotes the health and vitality of trees and plants. Neem has long been recognized for its antifungal, antibacterial and antiparasitic...
read more
Conventional and organic growers alike commonly use sticky strip traps as part of their integrated pest management programs, to monitor the...
read more
Conventional and organic growers alike commonly use sticky strip traps as part of their integrated pest management programs, to monitor the...
read more
A wetting agent and spreader-sticker, made from a liquid concentrate of 70% yucca solids. Increases the longevity and effectiveness of pesticide...
read more
A good heat mat makes the difference between success and complete failure when starting crops of tropical ancestry, including most Solanums...
read more
A good heat mat makes the difference between success and complete failure when starting crops of tropical ancestry, including most Solanums...
read more
These one-gallon plain round pots are great for young plants. Non-woven fabric pots provide excellent support to growing plants while allowing air...
read more
These 100-gallon plain round pots are perfect for those monster plants. Non-woven fabric pots provide excellent support to growing plants while...
read more
These 20-gallon pots with built-in handles for easier maneuvering. Non-woven fabric pots provide excellent support to growing plants while...
read more
These three-gallon plain round pots are great for young plants. Non-woven fabric pots provide excellent support to growing plants while allowing...
read more
These 45-gallon plain round pots are perfect for those monster plants. Non-woven fabric pots provide excellent support to growing plants while...
read more
These 5-gallon pots with built-in handles for easier maneuvering. Non-woven fabric pots provide excellent support to growing plants while allowing...
read more
Like our regular Fabric Pots, but with a Velcroed slit side to allow for easier transplanting without disturbing the root ball. With felt handles....
read more
Tired of cheap plastic six-packs that fade and crack? Concerned about harmful chemicals leaching from poly containers into the root zone of your...
read more
Have you longed to jettison those flimsy plastic plug flats but hesitated to invest all the extra soil, time and energy into soil blocks?...
read more
Have you longed to jettison those flimsy plastic plug flats but hesitated to invest all the extra soil, time and energy into soil blocks?...
read more
This precise controller thermostat (Heat mat sold separately) is to be used with our Agritape heat mats. Each controller has one flexible 3' tube...
read more
36" diameter round shelves of durable polyester in a metal frame. Center strap for improved weight support. Each rack includes 6 tiers that snap...
read more
Slim sharp shears for seriously snappy snips! As OGS coordinator Renee puts it, “this style is indispensable on the farm—it is the go-to pruner...
read more
For trimming jobs requiring delicacy and precision. Stainless steel blades extend through the rubber-coated plastic handles, making these shears...
read more
If you’re like us, you have little patience for 5-gallon bucket handles. Even when the cheap plastic on the wire bail is intact, the ergonomics...
read more
Everybody‘s got their favorite style of scissors for accomplishing those lengthy delicate trimming jobs efficiently and without strain. We like...
read more
The most compact and lightweight pruners Felco offers. Classic metal handles. At 6.9 ounces, this tool is about 20% lighter than the standard...
read more
This ultra-portable user-friendly pocket scope magnifies 60–120x, with a powerful LED light to deliver a bright clear image. Essential tool for...
read more
Reliable Solo quality for the home gardener, or for use in the greenhouse or grow room. Polyethylene tank has a 2-liter capacity. Piston pump with...
read more
This tried-and-true Solo deluxe model, offers an adjustable pressure cylinder, a brass nozzle, excellent parts availability and a solid...
read more
Bi-metal spring with 1⅝" needle dial on a 5" stainless steel probe for monitoring soil temperatures at planting depth. Gauge the optimum time for...
read more