Grodan Grow Cubes

Grow-Cubes are small 1/4” cubes of stone wool (Rockwool).

Grow-Cubes are small 1/4” cubes of stone wool (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.

You have less algae growth on the top than with the smooth surface Gro-Blocks™.

The Grow-Cubes are the driest of our products with properties of a 50/50 mix. (50% water/50% air)
Very easy to mix with any other potting mix.

Special advantages are achieved by mixing Grow-Cubes in with clay pellets. The Grow-Cubes will help spread the water in the container as well has keeping a water buffer in between the watering.

Lightweight; approx. 1/10th of the weight of a bag of potting soil.