1″ Rockwool 2 Sheets of 100 Plugs
- 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 for rapid plant growth
- Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums
- Twin Canaries Chart included with every order!