Made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs
Has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen...
The ideal growing media for seed starts, microgreens, baby leaf crops, and more. Thinnest Grodan available. 10 x 20 inch mats fits in most propagation trays. Consistent structure results in quick and...
New and improved stone wool substrate with advanced wetting technology from Grodan
Introducing Grodan Gro-Blocks Improved, a product specifically engineered to deliver real results for your crops,...
