Grodan Grow-Cubes

Grow-Cubes are small 1/4” cubes of stonewool (Rockwool). There are several advantages; Grow-Cubes stack on top of each other leaving air space in between them this promotes root growth. Each cube has four surfaces from which excess water can drain. This way, even if you water a lot, the Grow-Cubes will not get water logged. […]