Grow-Cubes are small 1/4” cubes of stonewool (Rockwool).
There are several advantages;
- When the cubes are wetted, they stack on top of each other leaving
air space in between the cubes.
- 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. Try combining with
our OMRI certified Coco-Dan grow mix or croutons.
- 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. 1/10 of the weigh of a bag of potting soil.
- See Grow-Cube growing guide
for easy instructions.
- Check out our guide to Ebb and
Flow Bucket Systems
- Also check out our Ebb and
Flow Bucket System comparison video
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Big
Bag 
Fills approx. 23 standard one-gallon nursery pots*