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Organic Growers Supply: Marijuana
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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.
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Soil conditioner for flower & vegetable gardens. Blend of compost, peat, aged bark and crab meal. Rich in micronutrients. Ideal for flower and vegetable beds.
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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.
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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!
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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.
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NPK: 2-5-1. All the NPK of fish, along with the micronutrients and growth hormones of kelp. Encourages vigorous rooting. Improves plant vigor and stress resistance, increases storage life of produce.
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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
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Molasses is a source of important nutrients, including manganese, magnesium, copper, potassium and calcium. Food grade, shelf stable. Plants and beneficial microbes have a sweet tooth, too!
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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!
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New formula is twice as concentrated as the liquid kelp we carried for years, so you'll need only half as much!
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NPK: 0-0-18. Highly concentrated extract makes an excellent foliar spray containing growth hormones, trace minerals, enzymes and carbohydrates.
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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.
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Contains over 67 minerals beneficial to plants and animals. A mix or particle sizes. Lots of powder, but still less dusty than Micronized Azomite.
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Contains over 67 minerals beneficial to plants and animals, including rare earth elements.
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A paramagnetic stone powder for remineralizing and enhancing general foundational soil fertility.
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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.
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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.
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Magnesium is a building block of chlorophyll and therefore essential to efficient photosynthesis. May boost yields significantly, especially for roses and tomatoes.
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ships year-round
The most common and most frequently used soil conditioner. also called Hi-Cal lime. Recommended for soils with excess magnesium.
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The least expensive liming agent. Use to sweeten soil (raise pH) and provide calcium where excess magnesium is not a problem.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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NPK: 0-0-50. The most economical source of available potassium! Fine-grained texture.
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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.
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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.
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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.
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ships year-round
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.
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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.
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by Tammi Sweet, 144 pages, 7x9, softcover. Practical, clear and wasting not a word, this guide is a perfect tool for anyone new to the world of...
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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.
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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.
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by David Deardorff and Kathryn Wadsworth, 192 pages, 7½x9½, softcover. The only book dedicated to a single species in the widely popular “What’s...
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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...
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UV-resistant zip ties designed for securing fencing, netting, and trellises to metal, fiberglass, or wooden posts up to 3" in diameter. Quick and easy to use, will not rust or rot.
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A netted grid of 6.5 x 6.5" squares can be used vertically or horizontally. Unlike our nylon trellis netting, jute netting does not stretch. Withstands up to three seasons of use.
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7" reach-through nylon mesh with a strand strength of 60# for tomatoes, climbing beans, peas, cucumbers and luffas. Will last for many years if you can avoid “the tangles”!
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This expansion kit can add another 200' of irrigation to your existing setup. Contains 200' of low-flow drip tape, 10 drip-tape fittings, 10 drip-tape ends, and 2 couplers.
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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!
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Perennial legume. The lowest-growing clover. This shade- and traffic-tolerant perennial makes nice garden paths and living mulch. Our most popular clover.
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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.
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100% silicone grips feature 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.
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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!
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A lifesaver for anyone who changes or moves hoses on a regular basis. Allows you to switch hoses without even turning the water off!
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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.
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OMRI-listed heavy duty paper mulch! Made from reclaimed cardboard, 100% bio-based, biodegradable/compostable, it blocks weeds while preserving moisture and your conscience.
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OMRI-listed heavy duty paper mulch! Made from reclaimed cardboard, 100% bio-based, biodegradable/compostable, it blocks weeds while preserving moisture and your conscience.
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Say goodbye to tiresome weeding around your plants with these 36x36"weed-control mats.
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Ready for a lasting solution for deer and other critters? This premium fence will do the job for at least 15 years! UV-resistant polypropylene mesh fence is recyclable, strong, and lightweight.
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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!
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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.
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Made with thyme oil and corn oil, greenhouse tests show CannControl to prevent and eliminate powdery mildew, gray mold, mites, aphids, whiteflies, thrips and fungus gnats.
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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.
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Monterey Complete Disease Control RTU Ready-to-Use Biofungicide/Bactericide
Pest and Disease Management
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.
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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.
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ships year-round
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.
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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.
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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.
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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.
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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.
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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.
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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.
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Liquid concentrate Bt (Bacillus thuringiensis subsp. kurstaki), labeled for a variety of caterpillar pests on most vegetables, ornamentals, and trees.
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Biodegradable contact insecticide effectively controls mites, aphids, earwigs, lace bugs, leafhoppers, mealybugs, scale, spider mites, thrips, tent caterpillars and whiteflies.
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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.
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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.
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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.
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These one-gallon plain round non-woven fabric pots provide great airflow and drainage. Fantastic for indoor growing, and can also be used outdoors.
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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.
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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.
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These three-gallon plain round non-woven fabric pots provide great airflow and drainage. Fantastic for indoor growing, and can also be used outdoors.
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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.
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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.
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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.
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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.
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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.
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The tops of these 7" tall domes neatly accept both LED and T5 grow lights. Adjustable top vents let you dial in precise humidity control. Sturdier than most domes on the market.
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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.
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These energy-efficient LEDs provide high-output full-spectrum lighting while saving loads of electricity. Integrated fixture with built-in reflector is ready to use.
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Lightweight, strong, and user-friendly light stand with a powder-coated finish to repel moisture and prevent rust.
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These energy-efficient LEDs provide high-output full-spectrum lighting while saving loads of electricity. Integrated fixture with built-in reflector is ready to use.
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Lightweight, strong, and user-friendly light stand with a powder-coated finish to repel moisture and prevent rust.
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These energy-efficient LEDs provide high-output full-spectrum lighting while saving loads of electricity. Integrated fixture with built-in reflector is ready to use.
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A handy hanger to suspend grow lights from a cart, shelf, or other structure. The ratcheting hangers are easy to adjust to the perfect height. 75-lb load capacity.
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A handy doodad that links two LED Strip Grow Lights end-to-end and in-line.
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Provides extremely uniform precise temperature over its entire surface. Makes the difference between success and failure when starting crops of tropical ancestry. Controller sold separately.
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Provides extremely uniform precise temperature over its entire surface. Makes the difference between success and failure when starting crops of tropical ancestry. Controller sold separately.
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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
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Warm the root zone for seedling success! The patented double-layer construction is tough, waterproof and easy to clean. Can be used with or without a controller. Fits four standard 1020 trays.
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Warm the root zone for seedling success! The patented double-layer construction is tough, waterproof and easy to clean. Can be used with or without a controller. Fits two standard 1020 trays.
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Warm the root zone for seedling success! The patented double-layer construction is tough, waterproof and easy to clean. Can be used with or without a controller. Fits one standard 1020 tray.
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Extend the capacity of your SunPad pro setup! These add-on mats each hold five standard 1020 trays and can be daisy-chained from the Master Mat for up to 5 linked mats.
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All the performance and safety features of SUNPACK’s standard heat mats, but with more power, larger size, linkability, and submersibility! Each 150W mat can accommodate five 1020 trays.
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Digital thermostatic device allows growers to select and maintain optimal temperatures (setting range: 68–108°) for germinating seeds or rooting cuttings. Works with most 120V heat mats.
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Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings from.
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Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings from.
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Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings from.
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Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings from.
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Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings from.
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Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings from.
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Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings from.
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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.
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ships year-round
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.
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Ditch the bottled nutrients with this water-only mix that's supercharged for maximum yield in flowering plants! Recommended for all fruiting and flowering plants, cannabis, and heavy-feeding crops.
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ships year-round
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.
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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.
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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.
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These puppies can support up to 120 lb! The plastic is very thick yet supple, with reinforced lip for safe and easy carrying. No drainage holes.
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Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots and plug flats.
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Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots and plug flats.
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Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a 1" profile. Great for growing full flats of microgreens and for soil blocks!
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These puppies can support up to 120 lb! The plastic is very thick yet supple, with reinforced lip for safe and easy carrying. No drainage holes.
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Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots and plug flats.
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Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a 1" profile. Great for growing full flats of microgreens and for soil blocks!
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We’ve never seen mesh bottom trays as sturdy or sleek as SUNPACK makes them. Rapid drainage and ample airflow make these an excellent choice for soil blocks large or small.
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These puppies can support up to 120 lb! The plastic is very thick yet supple, with reinforced lip for safe and easy carrying. No drainage holes.
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ships year-round
Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots and plug flats.
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ships year-round
Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a 1" profile. Great for growing full flats of microgreens and for soil blocks!
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ships year-round
These puppies can support up to 120 lb! The plastic is very thick yet supple, with reinforced lip for safe and easy carrying. No drainage holes.
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ships year-round
Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots and plug flats.
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ships year-round
Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a 1" profile. Great for growing full flats of microgreens and for soil blocks!
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ships year-round
These puppies can support up to 120 lb! The plastic is very thick yet supple, with reinforced lip for safe and easy carrying. No drainage holes.
read more
ships year-round
Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots and plug flats.
read more
ships year-round
Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a 1" profile. Great for growing full flats of microgreens and for soil blocks!
read more
ships year-round
These puppies can support up to 120 lb! The plastic is very thick yet supple, with reinforced lip for safe and easy carrying. No drainage holes.
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ships year-round
Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a 1" profile. Great for growing full flats of microgreens and for soil blocks!
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ships year-round
These puppies can support up to 120 lb! The plastic is very thick yet supple, with reinforced lip for safe and easy carrying. No drainage holes.
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ships year-round
Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots and plug flats.
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ships year-round
Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a 1" profile. Great for growing full flats of microgreens and for soil blocks!
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ships year-round
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!
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For monitoring soil temperatures at planting depth. Registers from 20–180° Fahrenheit.
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The most compact and lightweight metal-handled pruners Felco offers, and will give those with small hands full leverage advantage. Great for detailed work. Right-handed.
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These shears have straight blades with slightly rounded tips, which prevent damage to fruiting and vining crops, herbs and flowers. Carbon steel blades have a chromium coating to stop corrosion.
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Titanium-coated blades also resist sap buildup and corrosion without “forever chemicals”. Trim for hours before you'll need to wash them!
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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.
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This tried-and-true professional model offers an adjustable pressure regulator, a chemical-resistant stainless steel wand with brass nozzle, excellent parts availability, and a solid reputation.
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