Rockwool

Grodan Gro-Wool Medium Water Absorbent Granulate Rockwool, 3.5 cf
Granulated rockwool can be used alone or as an amendment to organic based mixes. For example, the addition of water a…
$246.83
Grodan Gro-Wool Medium Water…
$246.83
Grodan Grow-Cubes, 5.3 cf (loose in box)
This loose fill, non-bagged product consists of small stonewool croutons about the size of a finger nail. When you use t…
$203.99
Grodan Grow-Cubes, 5.3 cf…
$203.99
Grodan Grow-Cubes, 2 cf, 3/cs
Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, …
$89.76
Grodan Grow-Cubes, 2 cf, 3/cs
$89.76
Grodan Grow-Chunks, 2 cf, 3/cs
Super light and Super versatile. 2 cubic foot bag. Grow Chunks are a larger version (3/4” square) of the popula…
$82.62
Grodan Grow-Chunks, 2 cf, 3/cs
$82.62
Rockwool Block Covers, 6", 40/pk
Block light from media. Reflect light to plant leaves - where it’s needed most. Eliminate algae and…
$25.85
Rockwool Block Covers, 6", 40/pk
$25.85
Grodan Gro-Slab Improved 12" x 3" x 36", 8/cs
Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, …
$20.61
Grodan Gro-Slab Improved 12" x…
$20.61
Growers Edge Block Covers 4" 40/pk
For blocks of rockwool and other grow media. Grower's Edge® Block Covers block light from media—which helps reduce al…
$15.08
Growers Edge Block Covers 4" 40/pk
$15.08
Grodan Gro-Slab Improved, 6" x 4" x 36", 12/cs
Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, …
$14.04
Grodan Gro-Slab Improved, 6" x…
$14.04
Grodan Gro-Slab Improved, 8" x 3" x 36", 12/cs
Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, …
$13.90
Grodan Gro-Slab Improved, 8" x…
$13.90
Rockwool Block Covers, 4", 40/pk
Block light from media. Reflect light to plant leaves - where it’s needed most. Eliminate algae and…
$13.89
Rockwool Block Covers, 4", 40/pk
$13.89
Grodan Gro-Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/Strip, 24/cs
Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/Strip Grodan partnered with the Wageningen Univer…
$13.30
Grodan Gro-Block Improved GR10…
$13.30
Grodan Gro-Block Improved GR5.6 Large 3" w/Hole 3" x 3" x 4" Shrink wrapped/Strip, 32/cs
Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, …
$11.76
Grodan Gro-Block Improved…
$11.76