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Mini-Blocks sit in a tray (flat) without support for easy starting of seeds and cuttings. These Mini-Blocks are individually wrapped in white plast...

A-OK Starter Plugs for starting seeds and rooting of cuttings prior to plugging into the larger Gro-Blocks. A-OK Starter Plugs come labeled with in...

A-OK Starter Plugs for starting seeds and rooting of cuttings prior to plugging into the larger Gro-Blocks. A-OK Starter Plugs come labeled with in...

A-OK Starter Plugs for starting seeds and rooting of cuttings prior to plugging into the larger Gro-Blocks. A-OK Starter Plugs come labeled with in...

Gro-Blocks are similar to a plant container. Need a 3 in pot? Then choose a 3 in Gro-Block. Small plants can be fully grown in our larger Gro-Block...

Gro-Slabs provide the final stage for growing a spectacularly large plant. Transplant your Gro-Block plant onto a slab just like professional growe...

Grodan Delta 10 Block, 4" x 4" x 4", case of 144

Grodan Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384

Grodan Delta 4 Block, 3" x 3" x 2.5", no hole, case of 384

Grodan Delta 5.6 - 3 in Block (3 in x 3 in x 4 in) with Hole, case of 256

Grodan Delta 8 Block, 4" x 4" x 3", with hole, case of 180

Gro-Blocks™ are similar to a plant container. Need a 3 in pot? Then choose a 3 in Gro-Block™. Small plants can be fully grown in our larger Gro-Blo...

Gro-Slabs provide the final stage for growing a spectacularly large plant. Transplant your Gro-Block plant onto a slab just like professional growe...

Price shown is per unit; add to cart for case price.

Granulated rockwool works great on its own or mixed with other loose media such as expanded clay rocks or coconut fiber. If planting in containers ...

Box volume: 5.07 cu. ft., 150L Grow-Cubes are small loose 1/2 in cubes of stonewool. Advantages are better aeration, maximum drainage so that you ...

3 bags of 2 cu. ft. per case Grow-Cubes are small loose 1/2 in cubes of stonewool. Advantages are better aeration, maximum drainage so that you ca...

Grodan Macro Plug Round with Slit, 35 bags of 50, 1750 per case

Grodan Macro Plug Round with Slit, case of 2000

Same quality, same value-priced, Half sized cases. Driest value-priced rockwool on the market. Made at the Grodan® factories. Plain brown half cas...

Grodan Pargro QD 6 in x 36 in Slab, case of 12