You are viewing all Organic Growers Supply products related to “seed starting.”

Compost and Potting Soil

Compost and Potting Soil
Bio365 BIOALL™
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

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Compost and Potting Soil
CannaLot
Dan K., a faithful OGS customer with a flair for experimentation, developed this mix and was kind enough to share his formula with us. He says,... read more

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Compost and Potting Soil
Coir Blocks
This premium washed low-EC coconut coir is a biodegradable and environmentally sound substitute for peat moss. Compressed blocks of coconut fibers... read more

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Compost and Potting Soil
GreenTree Ag Blend™
All-purpose blend, light on the peat, with coconut coir, worm castings and a well-balanced organic nutrient package. pH 6.5 and EC 1.5 mS/cm.... read more

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Compost and Potting Soil
Living Acres NP Germination Blend™
A light-textured potting soil with extra perlite, screened to ½". Recommended for the smallest flower and herb seeds. Seedlings more than three... read more

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Peat-free Turbo Seed Starter currently on backorder, ETA 11/29
Peat-free is the way to be! This professionally calibrated mix will give any peat-based potting mix a run for its money. In a head-to-head trial,... read more

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Compost and Potting Soil
Perlite
Volcanic glass that has been heated until it “pops” like corn, resulting in a lightweight, porous and stable material. Widely used in potting... read more

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Compost and Potting Soil
Rice Hulls
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

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Compost and Potting Soil
Vermont Compost Fort Light™ Potting Soil
Blond sphagnum peat, compost, coconut coir, perlite, and a blend of organic and mineral amendments. Recommended for cell-tray seedlings, but not... read more

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Compost and Potting Soil
Vermont Compost Fort Vee™ 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

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Vermont Compost Jolly Roger™ currently on backorder, ETA 12/6
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

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Compost and Potting Soil
Vermont Compost Perennial Blend™
So many customers ask what to use for filling their raised beds or large containers, and we finally have an answer. Crafted by the soil experts at... read more

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Vermont Compost Totes expect 1-2 weeks for fulfillment
For the times when those little bags just won't cut it, Vermont Compost blends are available in 2 cubic yard totes, perfect for larger gardens and... read more

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Seed Starting

Seed Starting
Agritape Heat Mat 10ft
A good heat mat makes the difference between success and complete failure when starting crops of tropical ancestry, including most Solanums... read more

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Seed Starting
Agritape Heat Mat 4ft
A good heat mat makes the difference between success and complete failure when starting crops of tropical ancestry, including most Solanums... read more

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Seed Starting
Fabric Pots 1 gal
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

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Seed Starting
Fabric Pots 100 gal
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

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Seed Starting
Fabric Pots 20 gal
These 20-gallon pots with built-in handles for easier maneuvering. Non-woven fabric pots provide excellent support to growing plants while... read more

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Seed Starting
Fabric Pots 3 gal
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

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Seed Starting
Fabric Pots 45 gal
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

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Seed Starting
Fabric Pots 5 gal
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

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Fabric Transplant Pot
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

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Seed Starting
Made of recycled cardboard fiber, these handy planters breathe much like clay pots. Reusable with care—one customer says he got ten years out of... read more

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Seed Starting
Mesh Bottom Trays
Like our standard 1020 trays, but with open mesh bottoms. Favored by many growers for soil block propagation as roots will air-prune; simply lay in... read more

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Seed Starting
Plug Flats, 50 cell
Also known as Pro Trays. Fit into standard 1020 Trays for easy handling in the greenhouse. Made of lightweight black plastic with bottom drain... read more

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Seed Starting
Plug Flats, 72 cell
Also known as Pro Trays. Fit into standard 1020 Trays for easy handling in the greenhouse. Made of lightweight black plastic with bottom drain... read more

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Seed Starting
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

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Seed Starting
Six-packs
Convenient tear-apart plastic containers. 6 cells, 2-3/16 x 2⅜ x 3¼", to a pack, 6 packs to a sheet. Sheet fits easily into a 1020 Tray. Great for... read more

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1020 Trays

1020 Tray
Domes
Clear plastic raised covers, approximately 2" high, fit over 1020 Trays to create a miniature greenhouse environment for seedlings. Keep the soil... read more

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1020 Tray
Heavy Duty Dome
Sturdy clear plastic domes from the manufacturer of our heavy-duty plant trays. Will last for years with reasonable care. 3¼" tall. read more

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1020 Tray
Heavy Duty Plant Tray
These sturdy 11x22x2¾" khaki plastic trays will last for years and are strong enough to hold 50 2" soil blocks without strain. Good for... read more

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1020 Tray
High Domes
Our regular domes are not tall enough for vigorous seedlings like cucurbits and tomatoes: these larger plants will be pushing against the... read more

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1020 Tray
We’ve never seen a sturdier tray! Thicker plastic than the Heavy Duty Trays, yet more flexible and can allegedly withstand being run over by a... read more

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1020 Tray
10½x21x2¼" grey plastic trays, often called 1020 Trays. Use with domes to hold in heat and moisture. read more

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1020 Tray
10½x21x2¼" grey plastic trays, often called 1020 Trays. Good for windowsills because they have no drain holes. Use with domes to hold in heat and... read more

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CowPots

CowPot
CowPots™ 3" Round
Made in the U.S. from cow manure and a bit of recycled newsprint. Roots can grow right through the walls of the pot, and additional plant food... read more

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CowPot
CowPots™ 3" Square
Made in the U.S. from cow manure and a bit of recycled newsprint. Roots can grow right through the walls of the pot, and additional plant food... read more

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CowPot
CowPots™ 4" Square
Made in the U.S. from cow manure and a bit of recycled newsprint. Roots can grow right through the walls of the pot, and additional plant food... read more

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CowPot
CowPots™ Six-Pack
Six-packs of 3" squares, 3" tall. Made in the U.S. from cow manure and a bit of recycled newsprint. Roots can grow right through the walls of the... read more

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Jiffy Pots

Jiffy Pot
Jiffy® Pots 3" Round
Peat pots. Just the right size for tomatoes, brassicas and melons. 18 fit in a standard 1020 Tray. Peat Jiffy Pots can be put directly in the... read more

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Jiffy Pot
Peat pots. Square pots can be more tightly packed than round pots. Saves space and conserves moisture. 18 fit in a standard 1020 Tray. Peat Jiffy... read more

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Jiffy Pot
Peat pots. Bigger pots for squashes and other late-season plants. 14 fit in a standard 1020 Tray. Peat Jiffy Pots can be put directly in the... read more

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Ladbrooke

Ladbrooke
Makes 20 micro-blocks per stroke in a 3x4" area. Use when your space is limited or when you want a large number of transplants. Micro-blocks are... read more

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Ladbrooke
Make 2" soil blocks ready to receive micro-blocks. Set of square plastic inserts can be snapped into Mini 4 or Multi 12 blockers. Pop out the... read more

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Ladbrooke
Makes four 2" soil blocks in one stroke. Using soil blocks allows for easy transplanting and eliminates root spiraling. Made in England by... read more

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Ladbrooke
Makes five 1½" soil blocks in one stroke. Using soil blocks allows for easy transplanting and eliminates root spiraling. Made in England by... read more

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Makes twelve 2" blocks at one time. Very helpful for large production. Long handle means no stooping. Using soil blocks allows for easy... read more

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Neversink Farm Tools

Neversink Farm Tool
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

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Neversink Farm Tool
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

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Neversink Farm Tool
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

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Neversink Farm Tool
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

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Neversink Farm Tool
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

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Neversink Farm Tool
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

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Seed Starting Supplies

Seed Starting Supply
Children’s Grow Kit
An approachable starter kit for young or novice growers. Includes a packet of seed for each of a dozen crops (beans, carrots, popcorn, cucumbers,... read more

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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

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