You are viewing all Organic Growers Supply products related to “Cannabis Growing Supplies.”
Amendments and Fertilizers
Amendments and Fertilizers
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
Amendments and Fertilizers
(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
Amendments and Fertilizers
(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
Animal-based
Animal-based
(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
Animal-based
(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
Animal-based
Animal-based
(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
Minerals
Mineral
(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
Mineral
(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
Mineral
(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
Mineral
(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
Mineral
(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
Mineral
(0-6-0, up to 25% total P, plus at least 30% Ca and 10% SiO2. Natural phosphorus source from mines in British Columbia, Montana, and Mexico. Apply... read more
Mineral
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
Mineral
(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
Mineral
(9.8% water-soluble Mg, 12.9% S) Magnesium is a building block of chlorophyll and therefore essential to efficient photosynthesis. In... read more
Mineral
(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
Mineral
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
Mineral
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
Plant-based
Plant-based
(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
Plant-based
(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
Plant-based
(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
Plant-based
(NPK: 0-0-4) Maine-harvested Ascophyllum nodosum (AKA “rockweed,” “knotted wrack,” or “kelp”) is a source of growth-promoting and -regulating... read more
Plant-based
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
Plant-based
NPK: 0-0-18. Highly concentrated extract makes an excellent foliar spray containing growth hormones, trace minerals, enzymes and carbohydrates.
One
... read more
Maine-harvested kelp, Ascophyllum nodosum, is a source of growth-promoting and -regulating hormones. Use when starting seeds to improve seed... read more
Plant-based
(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
Planting Mixes
Planting Mix
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
Planting Mix
(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
Compost and Potting Soil
Compost and Potting Soil
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
Compost and Potting Soil
Compost and Potting Soil
Extra Rich Soil Conditioner for Flower & Vegetable Gardens. Blend of compost, peat, aged bark and crab meal. Rich in micronutrients. Ideal for... read more
Compost and Potting Soil
This premium washed low-EC coconut coir is a biodegradable and environmentally sound substitute for peat moss. Compressed blocks of coconut fibers... read more
Compost and Potting Soil
Compost and Potting Soil
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
Compost and Potting Soil
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
Compost and Potting Soil
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
Compost and Potting Soil
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
Farm Seed
Clover
Clover
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
Mixes
Mix
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
Inoculants and Probiotics
Microbials
Microbial
Microbial Inoculant Concentrated Effective Microorganisms®. Active microbial life in the soil and on plants is a better solution than synthetic... read more
You learn something new every day. Today we learned that retailers shouldn’t order their microbial inoculants in April, after the spring rush, or... read more
Microbial
(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
Microbial
Four species of endomycorrhizal fungi, 7 species of ectomycorrhizal fungi, 5 species of beneficial bacteria. About 90% of plant species form... read more
Probiotics
Probiotic
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
Probiotic
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 moreIrrigation
Irrigation
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
Irrigation
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
Kits
Kit
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
Library
Books
Book
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
Book
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
Book
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
Book
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
Book
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
Book
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
Livestock Supplies
Supplements
Supplement
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
Mulches
Mulches
The only mulch that might sabotage your diet resolutions—it really does smell like chocolate! The shells of the cocoa bean make an excellent... read more
Mulch
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
Plant Protection and Pest Control
Fungicides
Fungicide
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
Fungicide
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
Fungicide
Broad Spectrum Foliar Fungicide. A potassium bicarbonate formulation to prevent powdery mildew, Alternaria blight, Anthracnose, black spot,... read more
Fungicide
Bacillus amyloliquefaciens formulation for broad-spectrum control of bacterial and fungal diseases on vegetables, fruits, nuts, ornamental trees,... read more
Insecticides
Insecticide
Insecticide
Insecticide
Water dispersible. A dry formulation of the bacterium Chromobacterium subtsugae. A GRAND addition to your pest-fighting arsenal. Reduces plant... read more
Insecticide
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
Insecticide
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
Insecticide
Insecticide
Pyrethrin is a botanical insecticide derived from a chrysanthemum, Tanacetum cinerariaefolium, grown in Kenya and Tasmania, with low toxicity for... read more
Insecticide
for Trees, Shrubs & Vegetables Concentrate II. Liquid concentrate Bt (Bacillus thuringiensis subsp. kurstaki) Labeled for a variety of caterpillar... read more
Insecticide
Biodegradable contact insecticide effectively controls mites, aphids, earwigs, lace bugs, leafhoppers, mealybugs, scale, spider mites, thrips,... read more
Orchard and Garden Health
Orchard and Garden Health
Eastern tradition and Western utilitarianism meet again! Enlightened growers of veggies, fruits and medical ganja value karanja oil for its... read more
Orchard and Garden Health
Promotes the health and vitality of trees and plants. Neem has long been recognized for its antifungal, antibacterial and antiparasitic... read more
Orchard and Garden Pest Patrol
Orchard and Garden Pest Patrol
Conventional and organic growers alike commonly use sticky strip traps as part of their integrated pest management programs, to monitor the... read more
A very sticky substance made of castor oil, natural gum resins and vegetable waxes. Prevents climbing insects from reaching foliage, buds and... read more
Orchard and Garden Pest Patrol
Conventional and organic growers alike commonly use sticky strip traps as part of their integrated pest management programs, to monitor the... read more
Sticker-Spreaders
Sticker-Spreader
A wetting agent and spreader-sticker, made from a liquid concentrate of 70% yucca solids. Increases the longevity and effectiveness of pesticide... read more
Seed Starting Supplies
Seed Starting Supply
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
Seed-Starting Supplies
Seed-Starting Supply
A good heat mat makes the difference between success and complete failure when starting crops of tropical ancestry, including most Solanums... read more
Seed-Starting Supply
A good heat mat makes the difference between success and complete failure when starting crops of tropical ancestry, including most Solanums... read more
Seed-Starting Supply
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
Seed-Starting Supply
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
Seed-Starting Supply
These 20-gallon pots with built-in handles for easier maneuvering. Non-woven fabric pots provide excellent support to growing plants while... read more
Seed-Starting Supply
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
Seed-Starting Supply
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
Seed-Starting Supply
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
Seed-Starting Supply
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
Seed-Starting Supply
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
Seed-Starting Supply
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
Supplies
Supply
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
Tools
Tool
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
Tool
Everybody‘s got their favorite style of scissors for accomplishing those lengthy delicate trimming jobs efficiently and without strain. We like... read more
Felco
Felco
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
Orchard Tools
Orchard Tool
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
Sprayers
Sprayer
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
Sprayer
This tried-and-true Solo deluxe model, offers an adjustable pressure cylinder, a brass nozzle, excellent parts availability and a solid... read more
Thermometers
Thermometer
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