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

Bio365 BIOALL™
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

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CannaLot
Compost and Potting Soil

Use this complete soil mix in Fabric Pots to take your cannabis plants from 12" to harvest. Contains a wide variety of organic fertilizers, including biochar to support microbial activity. read more

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Living Acres NP Germination Blend™
Compost and Potting Soil

A light-textured potting soil with extra perlite, screened to ½". Recommended for the smallest flower and herb seeds. Transplant to a more nutrient-rich blend to grow out. Made in Maine. read more

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Peat-free Turbo Seed Starter
Compost and Potting Soil

This professionally calibrated mix will give any peat-based potting mix a run for its money. This reliable mix will keep your plants going strong in their flats for at least 4 weeks. read more

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Dirtcraft Peat-Free Critical Mass Supersoil
Dirtcraft Peat-Free Soil - Compost and Potting Soil

currently on backorder
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. read more

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Dirtcraft Peat-Free Levitation Seedling Mix
Dirtcraft Peat-Free Soil - Compost and Potting Soil

currently on backorder
Optimized for strong root growth, and charged with a fine-tuned organic fertilizer blend. Recommended for seed starting, transplants, paper-pot trays and rooting cuttings. read more

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Coir Blocks
More Planting Mediums - 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

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Perlite
More Planting Mediums - Compost and Potting Soil

A lightweight, porous and stable material made from volcanic glass. Widely used in potting mixes to improve water retention and prevent compaction. Also great for rooting cuttings. read more

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Rice Hulls
More Planting Mediums - 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

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Vermont Compost Fort Light™ Potting Soil
Vermont Compost Potting Mixes - Compost and Potting Soil

Recommended for cell-tray seedlings, but not for soil-blocking. Warms more quickly and drains better than Fort Vee, but might need additional fertilizing prior to transplanting. read more

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Vermont Compost Fort Vee™ Potting Soil
Vermont Compost Potting Mixes - 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

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Vermont Compost Jolly Roger™
Vermont Compost Potting Mixes - 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

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Vermont Compost Perennial Blend™
Vermont Compost Potting Mixes - Compost and Potting Soil

Great for filling their raised beds or large containers Coarser than potting mixes, and formulated as a complete soil for organic cultivation of woody plants, shrubs, herbs, vegetables and flowers. read more

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Vermont Compost Totes
Vermont Compost Potting Mixes - Compost and Potting Soil

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 growing operations. Choose from a variety of blends. read more

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Fogg-It Nozzle ½ GPM
Hand Watering - Irrigation

This solid brass head puts out a “superfine” (0.5 gal per minute) mist that is suitable for seed-starting or delicate plants of all kinds. read more

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Domes
Seed Starting

Clear plastic raised covers, approximately 2" high, fit over 1020 Trays to create a miniature greenhouse environment for seedlings. Keep the soil from drying out to speed and improve germination. read more

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Fabric Pots 1 gal
Seed Starting

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

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Fabric Pots 100 gal
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

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Fabric Pots 20 gal
Seed Starting

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

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Fabric Pots 3 gal
Seed Starting

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

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Fabric Pots 45 gal
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

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Fabric Pots 5 gal
Seed Starting

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

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Fabric Transplant Pot
Seed Starting

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

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Heavy Duty Dome
Seed Starting

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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High Domes
Seed Starting

These 7"-high domes that fit neatly over a standard 1020 tray. Two dial-type vents on the top of the dome allow you to manage the humidity. read more

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Kord® Fiber Grow Garden Paks
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 his before he had to order new ones. read more

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Mesh Bottom Trays
Seed Starting

Like our standard 1020 trays, but with open mesh bottoms. Favored by many growers for soil block propagation, supporting plug flats, and hydroponic production. 2⅜" deep. read more

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Plant Trays with Drain Holes
Seed Starting

10½ x 21 x 2¼" grey plastic trays, often called 1020 Trays. Use with a dome to hold in heat and moisture. read more

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Plant Trays without Drain Holes
Seed Starting

10½ x 21 x 2¼" grey plastic trays, often called 1020 Trays. Good for windowsills because they have no drain holes. Use with a dome to hold in heat and moisture. read more

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Plug Flats, 50 cell
Seed Starting

Also known as Pro Trays. Made of lightweight black plastic with bottom drain holes. 50 round cells in a sheet, 1.88" wide, 2.31" deep, fits into standard 1020 Trays. read more

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Plug Flats, 72 cell
Seed Starting

Also known as Pro Trays. Made of lightweight black plastic with bottom drain holes. 72 round cells in a sheet, 1.50" wide, 2.31" deep, fits into standard 1020 Trays. read more

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Silicone Six-Pack Trays
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

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Six-packs
Seed Starting

Convenient tear-apart plastic containers. 6 cells to a pack, 6 packs to a sheet. Sheet fits easily into a 1020 Tray. Great for selling seedlings. read more

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CowPots™ 3" Round
Seed Starting

Made in the U.S. from cow manure and a bit of recycled newsprint, nourishes the plant as it decomposes. Roots can grow right through the walls of the pot. 3" round, 3¼" tall read more

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CowPots™ 3" Square
Seed Starting

Made in the U.S. from cow manure and a bit of recycled newsprint, nourishes the plant as it decomposes. Roots can grow right through the walls of the pot. 3" square, 3" tall. read more

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CowPots™ 4" Square
Seed Starting

Made in the U.S. from cow manure and a bit of recycled newsprint, nourishes the plant as it decomposes. Roots can grow right through the walls of the pot. 4" square, 4⅜" tall. read more

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CowPots™ Six-Pack
Seed Starting

Made in the U.S. from cow manure and a bit of recycled newsprint, nourishes the plant as it decomposes. Roots can grow right through the walls of the pot. Six-packs of 3" squares, 3" tall. read more

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Children’s Grow Kit
Fedco Kit - Seed Starting

Everything a child or new grower needs to get started: soil, fertilizer, an EZ-Digger, seedling containers and plant labels, as well as growing instructions and seeds for a dozen easy crops. read more

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Garden Seed Storage Kit
Fedco Kit - Seed Starting

This lightweight metal box is just the right size for neatly filing our standard-sized seed packets. Perfectly portable. Comes with dividers, seed storage reference chart, and a handy handbook. read more

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Seed Starting Success Kit
Fedco Kit

Want to grow your own seedlings but don’t know where to start? This kit is for you! Contains potting soil, cell trays, domes, labels, and extra-thorough instructions to help you succeed. read more

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18" LED Strip Grow Light
Grow Lights - Seed Starting

SUNPACK’s high-output full-spectrum lighting ensures your plants receive optimal conditions. Energy-efficient LEDs save loads of electricity and... read more

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24" Grow Light Stand
Grow Lights - Seed Starting

For a head start on the growing season, you’ll need to provide supplemental indoor lighting to your seedlings. These light stands from SUNPACK are... read more

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24" LED Strip Grow Lights
Seed Starting

SUNPACK’s high-output full-spectrum lighting ensures your plants receive optimal conditions. Energy-efficient LEDs save loads of electricity and... read more

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48" Grow Light Stand
Grow Lights - Seed Starting

For a head start on the growing season, you’ll need to provide supplemental indoor lighting to your seedlings. These light stands from SUNPACK are... read more

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48" LED Strip Grow Lights
Seed Starting

SUNPACK’s high-output full-spectrum lighting ensures your plants receive optimal conditions. Energy-efficient LEDs save loads of electricity and... read more

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Adjustable Hanger for Grow Lights
Seed Starting

If you already have a cart, shelf or some other structure to suspend grow lights from, this handy hanger gives you maximum height customization... read more

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LED Strip Grow Light Connector
Grow Lights - Seed Starting

A handy doodad that links two LED Strip Grow Lights end-to-end and in-line. For example, it could link two 24" lights to make a 48" light,... read more

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Agritape Heat Mat 10ft
Seed Starting

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. read more

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Agritape Heat Mat 4ft
Seed Starting

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. read more

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Controller Thermostat for Agritape Heat Mat
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

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Long SunPad Heat Mat
Seed Starting

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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Medium SunPad Heat Mat
Seed Starting

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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Small SunPad Heat Mat
Seed Starting

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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SunPad Pro Add-On Mat
Heat Mat - Seed Starting

All the performance and safety features as SUNPACK’s standard heat mats, with the added benefits of more power, larger size, linkability, and... read more

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SunPad Pro Master Mat
Heat Mat - Seed Starting

All the performance and safety features as SUNPACK’s standard heat mats, with the added benefits of more power, larger size, linkability, and... read more

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Temperature Controller for Heat Mats
Seed Starting

SUNPACK’s digital thermostatic device allows growers to select and maintain optimal temperatures (setting range: 68–108°) for germinating seeds or... read more

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Jiffy® Pots 3" Round
Jiffy Pots - Seed Starting

Peat pots. Just the right size for tomatoes, brassicas and melons. Can be put directly in the ground without disturbing seedlings. 3" round, 3¼" tall. 18 fit in a standard 1020 Tray. read more

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Jiffy® Pots 3" Square
Jiffy Pots - Seed Starting

Square peat pots can be packed more tightly than round ones. Can be put directly in the ground without disturbing seedlings. 3" square, 3⅛" tall. 18 fit in a standard 1020 Tray. read more

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Jiffy® Pots 4½" Round
Jiffy Pots - Seed Starting

Peat pots. Bigger pots for squashes and other late-season plants. Can be put directly in the ground without disturbing seedlings. 4½" round, 4" tall. 14 fit in a standard 1020 Tray. read more

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Ladbrooke Micro 20 Blocker
Seed Starting

Makes 20 micro-blocks per stroke in a 3x4" area. Micro-blocks are easier to warm, speeding germination. Can be inserted into 2" soil blocks to continue seedling growth. read more

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Ladbrooke Micro Blocker Inserts
Seed Starting

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

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Ladbrooke Mini 4 Soil Blocker
Seed Starting

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

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Ladbrooke Mini 5 Soil Blocker
Seed Starting

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

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Indestructible Bottom Trays
Neversink Farm - Seed Starting

Thick flexible plastic tray with a rim that is sturdy and easy to handle. We’ve never seen a sturdier tray! Works with standard 1020 trays. No drain holes. read more

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Mini Wini Large-cell Tray
Neversink Farm - Seed Starting

All the great features of the full-sized winstrip trays, but sized for smaller plantings. Each tray has 10 cells, with cell size of 1.6" wide x 2.72" deep. 5 will fit in one 1020 tray. read more

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Mini Wini Medium-cell Tray
Neversink Farm - Seed Starting

All the great features of the full-sized winstrip trays, but sized for smaller plantings. Each tray has six 1.3" wide x 2.3" deep cells. 12 will fit in one 1020 tray. read more

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Mini Wini Small-cell Tray
Neversink Farm - Seed Starting

All the great features of the full-sized winstrip trays, but sized for smaller plantings. Each tray has 16 cells, with cell size of 1" wide x 1.9" deep. 8 will fit in one 1020 tray. read more

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Winstrip Air Pruning Tray, 128-cell
Neversink Farm - Seed Starting

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

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Winstrip Air Pruning Tray, 50 cell
Neversink Farm - Seed Starting

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

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Winstrip Air Pruning Tray, 72 cell
Neversink Farm - Seed Starting

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

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Black 2½" Heavy-Duty Square Pots
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings... read more

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Black 5" Heavy-Duty Microgreen Trays
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty... read more

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Black Mega-Duty Bottom Tray
Sunpack® - Seed Starting

If you’re wondering what “mega” really means here, we’re talking about a tray that can support 120 lb. Imagine resting a 1020 tray across... read more

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Black Shallow Heavy-Duty Bottom Tray without Drain Holes
Sunpack® - Seed Starting

Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots... read more

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Black Shallow Heavy-Duty Bottom Trays with Drain Holes
Sunpack® - Seed Starting

Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots... read more

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Black Shallow Heavy-Duty Mesh Tray
Sunpack® - Seed Starting

Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a shallow 1" profile (¾" usable depth). Great for growing full flats of microgreens... read more

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Blue 2½" Heavy-Duty Square Pots
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings... read more

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Blue 5" Heavy-Duty Microgreen Trays
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty... read more

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Blue Mega-Duty Bottom Tray
Sunpack® - Seed Starting

If you’re wondering what “mega” really means here, we’re talking about a tray that can support 120 lb. Imagine resting a 1020 tray across... read more

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Blue Shallow Heavy-Duty Bottom Trays with Drain Holes
Sunpack® - Seed Starting

Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots... read more

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Blue Shallow Heavy-Duty Mesh Tray
Sunpack® - Seed Starting

Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a shallow 1" profile (¾" usable depth). Great for growing full flats of microgreens... read more

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Deep Heavy-Duty Mesh Trays
Sunpack® - Seed Starting

We’ve never seen mesh bottom trays as sturdy or as sleek as SUNPACK makes them. These are 2.3 times thicker than our old mesh trays. They provide... read more

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Green 2½" Heavy-Duty Square Pots
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings... read more

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Green 5" Heavy-Duty Microgreen Trays
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty... read more

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Green Mega-Duty Bottom Tray
Sunpack® - Seed Starting

If you’re wondering what “mega” really means here, we’re talking about a tray that can support 120 lb. Imagine resting a 1020 tray across... read more

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Green Shallow Heavy-Duty Bottom Trays with Drain Holes
Sunpack® - Seed Starting

Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots... read more

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Green Shallow Heavy-Duty Mesh Tray
Sunpack® - Seed Starting

Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a shallow 1" profile (¾" usable depth). Great for growing full flats of microgreens... read more

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High Domes with Light Tracks
Sunpack® - Seed Starting

When they go low, we go high! These 7" tall domes offer clear high-level utility and versatility for growers at any scale, accommodating vigorous... read more

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Lime 2½" Heavy-Duty Square Pots
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings... read more

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Lime 5" Heavy-Duty Microgreen Trays
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty... read more

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Lime Mega-Duty Bottom Tray
Sunpack® - Seed Starting

If you’re wondering what “mega” really means here, we’re talking about a tray that can support 120 lb. Imagine resting a 1020 tray across... read more

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Lime Shallow Heavy-Duty Bottom Trays with Drain Holes
Sunpack® - Seed Starting

Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots... read more

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Lime Shallow Heavy-Duty Mesh Tray
Sunpack® - Seed Starting

Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a shallow 1" profile (¾" usable depth). Great for growing full flats of microgreens... read more

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Magenta 2½" Heavy-Duty Square Pots
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings... read more

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Magenta 5" Heavy-Duty Microgreen Trays
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty... read more

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Magenta Mega-Duty Bottom Tray
Sunpack® - Seed Starting

If you’re wondering what “mega” really means here, we’re talking about a tray that can support 120 lb. Imagine resting a 1020 tray across... read more

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Magenta Shallow Heavy-Duty Bottom Trays with Drain Holes
Sunpack® - Seed Starting

Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots... read more

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Magenta Shallow Heavy-Duty Mesh Tray
Sunpack® - Seed Starting

Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a shallow 1" profile (¾" usable depth). Great for growing full flats of microgreens... read more

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Mixed Color Bundle Mega-Duty Bottom Trays
Sunpack® - Seed Starting

If you’re wondering what “mega” really means here, we’re talking about a tray that can support 120 lb. Imagine resting a 1020 tray across... read more

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Mixed Colors 2½" Heavy-Duty Square Pots
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings... read more

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Multicolor Bundle of Shallow Heavy-Duty Mesh Trays
Sunpack® - Seed Starting

Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a shallow 1" profile (¾" usable depth). Great for growing full flats of microgreens... read more

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Orange 2½" Heavy-Duty Square Pots
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe pots have efficient drainage holes, are easy to fill with potting mix, and are easy to extract seedlings... read more

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Orange 5" Heavy-Duty Microgreen Trays
Sunpack® - Seed Starting

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty... read more

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Orange Mega-Duty Bottom Tray
Sunpack® - Seed Starting

If you’re wondering what “mega” really means here, we’re talking about a tray that can support 120 lb. Imagine resting a 1020 tray across... read more

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Orange Shallow Heavy-Duty Bottom Trays with Drain Holes
Sunpack® - Seed Starting

Sturdy shallow-rimmed injection-molded bottom trays with 1" of usable depth are a must-have for growing microgreens, and great support for pots... read more

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Orange Shallow Heavy-Duty Mesh Tray
Sunpack® - Seed Starting

Same strong mesh as the Deep Heavy-Duty Mesh Trays, but with a shallow 1" profile (¾" usable depth). Great for growing full flats of microgreens... read more

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