You are viewing all Organic Growers Supply products related to “Cannabis Growing Supplies.”
Amendments and Fertilizers
Amendments and Fertilizers
Biochar helps your soil sequester more carbon and emit less nitrous oxide. Also provides a dream home for beneficial bacteria and fungi, while preventing essential nutrients from leaching away. read more
Amendments and Fertilizers
NPK: 2-2-2. 16% Chitin. Nourishes chitin-feeding bacteria and fungi, which in turn devour gnat eggs and root-feeding nematodes. Also fortifies plants’ cell walls, and fosters healthy blooms. read more
Amendments and Fertilizers
NPK: 0.5-0.5-0.3 apx, plus trace minerals. Worm castings limit plant disease and have beneficial effects including enhanced mycorrhizal activity and the suppression of parasitic nematodes. read more
Animal-based
Animal-based
NPK: 4-4-0 avg. 18% Ca avg. A macronutrient-rich byproduct of crab processing. Will help you grow massive specimens of field-grown cannabis. Improves lodging resistance and reduces branch breakage. read more
Animal-based
NPK: 13-0-0. One of the fastest release times of all organic nitrogen sources. Highly recommended for corn. The smell (understandably) freaks out deer. Use as a side-dressing or till into soil. read more
Animal-based
NPK: 2-5-1. All the NPK of fish, along with the micro-nutrients and growth hormones of kelp. Encourages vigorous rooting. Improves plant vigor and stress resistance, increases storage life of produce. read more
Animal-based
NPK: 0-16-0. Provides large amounts of readily available phosphorus. A most economical source of P for deficient soils. May be applied without restrictions to organically certified fields. read more
Minerals
Mineral
Mineral
Contains over 67 minerals beneficial to plants and animals. A mix or particle sizes. Lots of powder, but still less dusty than Micronized Azomite. read more
Mineral
Contains over 67 minerals beneficial to plants and animals, including rare earth elements. read more
Mineral
A paramagnetic stone powder for remineralizing and enhancing general foundational soil fertility. read more
Mineral
Natural phosphorus source. Adequate phosphorus results in more vigorous early root formation, better flower and seed production, better growth in cold temperatures, and better water use efficiency. read more
Mineral
Contains about 5% potassium in very slow-release form. Can be added to the soil in large amounts without altering the pH. Greatly enhances soil structure and promotes healthier plants. read more
Mineral
Magnesium is a building block of chlorophyll and therefore essential to efficient photosynthesis. May boost yields significantly, especially for roses and tomatoes. read more
Mineral
Recommended by soil gurus Phil Callahan and Mark Fulford. Lowest concentration of heavy metals of any phosphate source. Concentrations of available phosphate were regularly over 6% when tested. read more
Mineral
The most common and most frequently used soil conditioner. also called Hi-Cal lime. Recommended for soils with excess magnesium. read more
Mineral
The least expensive liming agent. Use to sweeten soil (raise pH) and provide calcium where excess magnesium is not a problem. read more
Plant-based
Plant-based
NPK: 4.6-0.9-1.3 avg. A favorite of earthworms and other beneficial soil organisms, and inhibits the growth of some notorious pathogenic soil microbes. Beloved by hemp and cannabis growers. read more
Plant-based
NPK: 6-1-3 avg. Rich in the basic nutrients, nitrogen, phosphorus and potassium, it makes an excellent fertilizer and soil additive. Can help suppress fusarium infestations. read more
Plant-based
NPK: 2.5-0.4-3.3 avg. Gives plants a noticeable boost and feeds soil organisms. Excellent vegan alternative to blood meal as a nitrogen source. Hands-down the best-smelling fertilizer out there. read more
Plant-based
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
Plant-based
New formula is twice as concentrated as the liquid kelp we carried for years, so you'll need only half as much! read more
Plant-based
For soil: excellent source of naturally chelated elements, enzymes, and amino acids. For livestock: excellent source of iodine, vitamin A and dozens of other vitamins and trace minerals. read more
Plant-based
NPK: 0-0-18. Highly concentrated extract makes an excellent foliar spray containing growth hormones, trace minerals, enzymes and carbohydrates. read more
Plant-based
NPK: 7-1.5-1 avg. Effective and economical nitrogen fertilizer for Northeast soils. High levels of nitrogen and potassium are released as soybean meal breaks down, providing fertility over time. read more
Planting Mixes
Planting Mix
This fertilizer and amendment mix includes all the goods contained in our well-loved CannaLot MegaSoil, minus the compost and potting soil. Great for plants grown in the ground, and cheaper to ship! read more
Planting Mix
NPK: 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 critters. read more
Compost and Potting Soil
Compost and Potting Soil
A premium high-test potting soil recommended for indoor growers, container gardening, soil-blocking, or slow-growing seedlings that will be in the greenhouse for six weeks or more. Made in New York. read more
Compost and Potting Soil
Compost and Potting Soil
Soil conditioner for flower & vegetable gardens. Blend of compost, peat, aged bark and crab meal. Rich in micronutrients. Ideal for flower and vegetable beds. read more
Compost and Potting Soil
An environmentally sound substitute for peat moss. Use in potting mixes or to add organic matter to your soil. Improves aeration, nutrient retention, and moisture-retention capacity. read more
Compost and Potting Soil
Compost and Potting Soil
This top-quality compost has strong nitrogen levels and sky-high organic matter. Use as a top-dressing, mix into garden soil, or apply around the trees. Made in Sidney, Maine. read more
Compost and Potting Soil
A great alternative to perlite in your growing medium—carbonaceous, renewable and less dusty to mix. Also used as a mulch for container plants. Parboiled to eliminate viable weed seeds. read more
Compost and Potting Soil
Widely used by growers who make soil blocks. Has good water retention and a long-lasting nutrient supply from the high proportion of compost in the mix. Highly recommended for slow-growing seedlings. 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! Also great for tomatoes and other vegetables, flowers or houseplants. read more
Farm Seed
Clover
Clover
Perennial legume. The lowest-growing clover. This shade- and traffic-tolerant perennial makes nice garden paths and living mulch. Our most popular clover. read more
Mixes
Mix
Diverse multispecies clover-heavy mix is great as a soil-building living mulch under tall-growing competitive crops, like cannabis. Suitable in raised beds, containers and high tunnels. read more
Inoculants and Probiotics
Microbials
Microbial
A liquid combination of yeasts, actinomycetes, and bacteria. Promotes plant health and growth, and improves nutrient absorption and soil fertility. Our cannabis-growing friends can't do without it. read more
Microbial
Microbial
NPK: 4-4-0.5. Contains fish hydrolysate, kelp extract, humic and fulvic acids, and a dash of chilean nitrate to boost the nitrogen levels for rapid vegetative growth read more
Microbial
A blend of mycorrhizal fungi and beneficial bacteria. Add to seedbeds or work into the soil around your trees and shrubs to boost root growth, nutrient uptake and the health of your plants and soils. 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 effective fertilization program read more
Probiotic
Humic acids perform many complex functions. They neutralize soil pH, prevent leaching of trace minerals, stimulate growth of foliage and roots significantly, and much, much, more! read more
Irrigation
Irrigation
A lifesaver for anyone who changes or moves hoses on a regular basis. Fittings simply snap together for a watertight seal. Allows you to switch hoses without even turning the water off! read more
A lifesaver for anyone who changes or moves hoses on a regular basis. Allows you to switch hoses without even turning the water off! read more
Kits
Kit
This starter kit gives you everything you need for 200' of garden row-crop irrigation. Includes setup instructions, low-flow drip tape, as well as fittings, ends, couplers and more! read more
Library
Books
A must-read for anyone in the cannabis industry. Covers all aspects from soil and seed, to planting, growing and maintaining, through markets and product diversification. Funny and informative. read more
Book
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
Book
A soil science book for everyone! Filled with farmer anecdotes, insightful reference charts, and illustrations, this book is both engrossing and practical for anyone who works with soil. read more
Book
This book dives deep into the chemical and biological workings of your garden soil! Plenty of in-depth science, but also includes 12 soil amendment recipes simple enough for a layperson to follow. 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
Mulches
Mulch
Hooray for the release of this OMRI-listed heavy duty paper mulch! Reclaimed cardboard, 100% bio-based, biodegradable/compostable, it blocks weeds... read more
Mulch
Hooray for the release of this OMRI-listed heavy duty paper mulch! Reclaimed cardboard, 100% bio-based, biodegradable/compostable, it blocks weeds... read more
Mulch
These hemp-fiber squares block weeds and preserve moisture around the base of young trees. Easier and tidier to use than loose mulches; safe for humans, animals and the environment. read more
Pest Management
Pest Management
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
Fungicides
A copper fungicide for the home gardener. Copper is a very effective fungicide, but regular use may result in problematic concentrations in the soil or plant tissue: we advise regular soil testing! read more
Fungicide
A broad-spectrum preventative product made with Bacillus subtilis for the control or suppression of many important plant diseases. May be used as a drench or foliar spray. read more
Fungicide
Broad Spectrum Foliar Fungicide formulation to prevent and cure powdery mildew. Prevents Anthracnose, black spot, Botrytis blight, Cercospora leaf spot, downy mildew, Septoria leaf spot, and others. read more
Fungicide
Broad-spectrum control of bacterial and fungal diseases on vegetables, fruits, nuts, ornamental trees, shrubs, flowering plants, houseplants and tropical plants grown in home gardens or greenhouses. read more
Insecticides
Insecticide
Insecticide
Botanical Insecticide/Miticide/Nematicide with azadirachtins A+B. Offers rapid knockdown of spider mites and cucumber beetles: similar to PyGanic, but with a lower price tag and less toxic to bees. read more
Insecticide
Reduces plant damage from sucking and chewing insects including Colorado potato beetle larve. Faster-acting than most biological products: stops feeding activity within one minute of exposure. read more
A botanical insecticide derived from chrysanthemum that has a rapid knockdown and high kill rate, but low toxicity for humans and other vertebrates. For home garden use only. Please apply with care. read more
Insecticide
Snail and slug bait mixed with iron phosphate. Snails and slugs gather to eat the bait, and the iron phosphate causes them to cease feeding and die in a few days. Damage reduction is almost immediate. read more
Similar to Sluggo, but with the addition of a small amount of spinosad (0.07%), which greatly increases effectiveness and scope. For snails, slugs, cutworms, earwigs, pillbugs, crickets and more. read more
Insecticide
A botanical insecticide derived from chrysanthemum that has a rapid knockdown and high kill rate, but low toxicity for humans and other vertebrates. Commercial use only. Please apply with care. read more
Insecticide
Liquid concentrate Bt (Bacillus thuringiensis subsp. kurstaki), labeled for a variety of caterpillar pests on most vegetables, ornamentals, and shade trees. read more
Insecticide
Biodegradable contact insecticide effectively controls mites, aphids, earwigs, lace bugs, leafhoppers, mealybugs, scale, spider mites, thrips, tent caterpillars and whiteflies. read more
Orchard and Garden Health
Orchard and Garden Health
Rich in several bitter flavonoids that stimulate plant immune function. Shown to prevent many pests from feeding and laying eggs. Also shown to kill pests such as mites, aphids and leafminer larvae. read more
Orchard and Garden Health
Neem has long been recognized for its antifungal, antibacterial and antiparasitic properties. Promotes the health and vitality of trees and plants. Deters a wide range of insect pests. read more
Orchard and Garden Pest Patrol
Can be used to monitor the presence and population level of insect pests or as a control measure (when used in high density on small plantings). For thrips and leafminers. read more
Orchard and Garden Pest Patrol
Can be used to monitor the presence and level of insect pests, or as a control measure (on small plantings). For aphids, cucumber beetles, fungus gnats, corn root worms or whiteflies. read more
Sticker-Spreaders
Sticker-Spreader
A wetting agent and spreader-sticker. Increases the longevity and effectiveness of pesticide applications and forces hydrophobic potting media (like dry peat moss) to more readily absorb water. read more
Seed Starting
Seed Starting
Provides extremely uniform precise temperature over its entire surface. Makes the difference between success and failure when starting starting crops of tropical ancestry. Controller sold separately. read more
Seed Starting
Provides extremely uniform precise temperature over its entire surface. Makes the difference between success and failure when starting starting crops of tropical ancestry. Controller sold separately. read more
Seed Starting
Controller thermostat to be used with Agritape heat mats. Each controller has a flexible 3' tube with a temperature-sensor bulb to insert into the potting soil. Heat mat sold separately read more
These one-gallon plain round non-woven fabric pots provide great airflow and drainage. Fantastic for indoor growing, and can also be used outdoors. read more
Seed Starting
These 100-gallon plain round non-woven fabric pots provide great airflow and drainage for all your giant plants. Fantastic for indoor growing, and can also be used outdoors. read more
These 20-gallon non-woven fabric pots have built-in handles, and provide great airflow and drainage. Fantastic for indoor growing, and can also be used outdoors. read more
These three-gallon plain round non-woven fabric pots provide great airflow and drainage. Fantastic for indoor growing, and can also be used outdoors. read more
Seed Starting
These 45-gallon plain round non-woven fabric pots provide great airflow and drainage for all your giant plants. Fantastic for indoor growing, and can also be used outdoors. read more
These 5-gallon non-woven fabric pots have built-in handles, and provide great airflow and drainage. Fantastic for indoor growing, and can also be used outdoors. 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. By popular request from our walk-in customers. read more
Seed Starting
Tired of cheap plastic six-packs that fade and crack? Then invest in these crush-proof break-proof melt-proof freeze-proof seedling containers made of rugged BPA-free FDA-approved silicone. read more
Neversink Farm
Neversink Farm
These trays offer the best features of both plug flats and soil blockers, and then some! Extremely durable recycled plastic is food grade, BPA-free and UV-resistant. Made in the USA. read more
Neversink Farm
These trays offer the best features of both plug flats and soil blockers, and then some! Extremely durable recycled plastic is food grade, BPA-free and UV-resistant. Made in the USA. read more
Supplies
Supply
Perfect for drying flowers and herbs of all types. 36" diameter round shelves of durable polyester in a metal frame provide 42 sq ft of total surface area! Adjusts to varying heights. read more
Tools
Tool
These shears have straight blades slightly rounded tips, which prevent damage to fruiting and vining crops, herbs and flowers. Carbon steel blades with chromium coating to stop corrosion. read more
For trimming jobs requiring delicacy and precision. Stainless steel blades extend through the rubber-coated plastic handles, making these shears as durable as they are lightweight. read more
Tool
100% silicone grips features finger grooves and a larger grip circumference, so the weight is more evenly distributed on your hand. Easy to put on and take off but doesn’t come loose during use. read more
Tool
Titanium-coated blades also resist sap buildup and corrosion without “forever chemicals”. Trim for hours before you'll need to wash them! read more
Felco
Felco
The most compact and lightweight pruners Felco offers, and will give those with small hands full leverage advantage. Great for detailed work. Right-handed. read more
Orchard Tools
Orchard Tool
This ultra-portable pocket scope magnifies 60–120x, with a powerful LED light to deliver a bright clear image. For plant analysis and curious kids! read more
Sprayers
Sprayer
A compact and versatile little workhorse of a sprayer, for use in the greenhouse, grow room, or home garden. Tank has a 2-liter capacity. Piston pump with Viton seals for chemical resistance. read more
Sprayer
This tried-and-true four-gallon Solo 475-Professional model offers an adjustable pressure regulator, a chemical-resistant stainless steel wand... read more
Thermometers
Thermometer
For monitoring soil temperatures at planting depth. Registers from 20–180° Fahrenheit. read more