Stonewool and Hemp: A Dynamic Duo Stonewool has a past that is very diverse with its origins in the construction industry as an insulation for buildings. This material is still used today as an insulation material. In the late 1960’s Denmark scientists conducted tests on various materials to see their effectiveness as a soilless growing media. Stonewool proved to be...

New Stonewool Flowering Slabs Hit Global Market RedRock Block, a North American manufacturer of locally sourced stonewool grow blocks and slabs, introduces new premium line of commercial grade stonewool flowering slabs for large-scale greenhouse operators, hydroponic growers, indoor farms, and CEA facilities. Commercial growers worldwide can now acquire some of the cleanest and purest stonewool grow blocks, cubes, plugs, solo...