You are viewing all Organic Growers Supply products related to “seed starting.”
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
This premium washed low-EC coconut coir is a biodegradable and environmentally sound substitute for peat moss. Compressed blocks of coconut fibers...
read more
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
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
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
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
Blond sphagnum peat, compost, coconut coir, perlite, and a blend of organic and mineral amendments. Recommended for cell-tray seedlings, but not...
read more
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
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
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
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
A good heat mat makes the difference between success and complete failure when starting crops of tropical ancestry, including most Solanums...
read more
A good heat mat makes the difference between success and complete failure when starting crops of tropical ancestry, including most Solanums...
read more
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
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
These 20-gallon pots with built-in handles for easier maneuvering. Non-woven fabric pots provide excellent support to growing plants while...
read more
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
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
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
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
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
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
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
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
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
Clear plastic raised covers, approximately 2" high, fit over 1020 Trays to create a miniature greenhouse environment for seedlings. Keep the soil...
read more
Sturdy clear plastic domes from the manufacturer of our heavy-duty plant trays. Will last for years with reasonable care. 3¼" tall.
read more
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
Our regular domes are not tall enough for vigorous seedlings like cucurbits and tomatoes: these larger plants will be pushing against the...
read more
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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