Made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs.
Package includes: 50 / 100pcs * rock wool cubes, size: about 25x25x40mm.
Optimum robustness and flexibility,Ideal air/water balance,Consistent shape of the seed hole,Identically shaped plugs,Root development through the entire plug,plugs are designed for seed and cutting propagation.The V-shape design of the plug discourages tangling of roots between the plugs in the plug sheet.
It has a huge ability to absorb nutrients and retains a lot of oxygen for the rapid growth of plants.
The bulk density is small, the texture is light, and the porosity is large, good air permeability, strong water absorption and good drainage.
