Seed Starting Supplies

Lime 2½" Heavy-Duty Square Pots

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

ships year-round

sale!

Magenta 2½" Heavy-Duty Square Pots

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

ships year-round

sale!

Magenta 5" Heavy-Duty Square Pots

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

ships year-round

sale!

Mixed Colors 2½" Heavy-Duty Square Pots

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

ships year-round

sale!

Orange 2½" Heavy-Duty Square Pots

sale! was $75.00

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

ships year-round

sale!

Orange 5" Heavy-Duty Square Pots

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

ships year-round

sale!

Yellow 5" Heavy-Duty Square Pots

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

ships year-round

sale!

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

ships year-round

sale!

bio365 BIOALL™

CannaLot Medicinal MegaSoil

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.

ships year-round

sale!

sale! was $85.00

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.

ships year-round

sale!

Coir Blocks

Dirtcraft Peat-Free Critical Mass Supersoil

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.

ships year-round

sale!

Dirtcraft Peat-Free Levitation Seedling Mix

sale! was $42.00

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.

ships year-round

sale!

G-Force Peat-Free All-Purpose Mix

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.

ships year-round

sale!

Living Acres NP Germination Blend™

Buckle up: G-Force will open the throttle and help your plants accelerate to new heights. This is a complete growing mix engineered for rapid

ships year-round

sale!

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.

ships year-round

sale!

Perlite

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.

ships year-round

sale!

Rice Hulls

Vermont Compost Fort Light™ 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.

ships year-round

sale!

Vermont Compost Fort Vee™ 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.

ships year-round

sale!

Vermont Compost Jolly Roger™

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.

ships year-round

sale!

Vermont Compost Pallets of Bags

sale! was $52.00

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.

ships year-round

sale!

Vermont Compost Perennial Blend™

For the times when a few bags just won't cut it, Vermont Compost blends are available in full pallets of 45-quart bags (36 bags per pallet).

ships year-round

sale!

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.

ships year-round

Vermont Compost Totes

Ladbrooke Micro 20 Soil Blocker

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.

ships year-round

sale!

Ladbrooke Micro Soil Blocker Inserts

sale! was $34.00

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.

ships year-round

sale!

Ladbrooke Mini 4 Soil Blocker

currently on backorder

These 4 inserts are meant to be snapped into a Mini 4 Blocker, to make cube-shaped pockets in your 2" soil blocks, so that they can receive ¾" micro-blocks made by the Micro 20 Blocker.

ships year-round

sale!

Ladbrooke Mini 5 Soil Blocker

sale! was $48.00

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.

ships year-round

sale!

Ladbrooke Multi 35 Soil Blocker

sale! was $52.00

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.

ships year-round

sale!

Black 5" Heavy-Duty Microgreen Trays

sale! was $285.00

With each stroke, this stand-up soil blocker makes 35 blocks, each a 1⅛" cube with a dibble. We especially love how the sets of blocks fit

ships year-round

sale!

Black Mega-Duty Bottom Tray

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty seedlings. Eight fit neatly in a standard 1020 flat.

ships year-round

sale!

Black Shallow Heavy-Duty Bottom Tray without Drain Holes

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.

ships year-round

sale!

Black Shallow Heavy-Duty Bottom Trays with Drain Holes

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.

ships year-round

sale!

Black Shallow Heavy-Duty Mesh Tray

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.

ships year-round

sale!

Blue 5" Heavy-Duty Microgreen Trays

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!

ships year-round

sale!

Blue Mega-Duty Bottom Tray

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty seedlings. Eight fit neatly in a standard 1020 flat.

ships year-round

sale!

Blue Shallow Heavy-Duty Bottom Trays with Drain Holes

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.

ships year-round

sale!

Blue Shallow Heavy-Duty Mesh Tray

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.

ships year-round

sale!

Deep Heavy-Duty Mesh Trays

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!

ships year-round

sale!

Green 5" Heavy-Duty Microgreen Trays

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.

ships year-round

sale!

Green Mega-Duty Bottom Tray

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty seedlings. Eight fit neatly in a standard 1020 flat.

ships year-round

sale!

Green Shallow Heavy-Duty Bottom Trays with Drain Holes

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.

ships year-round

sale!

Green Shallow Heavy-Duty Mesh Tray

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.

ships year-round

sale!

Indestructible Bottom Trays

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!

ships year-round

sale!

Lime 5" Heavy-Duty Microgreen Trays

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.

ships year-round

sale!

Lime Mega-Duty Bottom Tray

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty seedlings. Eight fit neatly in a standard 1020 flat.

ships year-round

sale!

Lime Shallow Heavy-Duty Bottom Trays with Drain Holes

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.

ships year-round

sale!

Lime Shallow Heavy-Duty Mesh Tray

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.

ships year-round

sale!

Magenta 5" Heavy-Duty Microgreen Trays

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!

ships year-round

sale!

Magenta Mega-Duty Bottom Tray

Strong injection-molded dishwasher-safe trays with drain holes for efficient production of high-quality microgreens, wheatgrass or specialty seedlings. Eight fit neatly in a standard 1020 flat.

ships year-round

sale!