Grodan Grow Cubes – 2 Cubic Feet


SAVE $142.88 (76%)

Grow-Cubes are small 1/4" cubes of stone wool.  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 waterlogged. These are great little cubes of Rockwool that are used as a growing medium in a net or regular pot.

  • Grow-Cubes stack on top of each other leaving air space in between them this promotes root growth.
  • 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.
  • Lightweight; approx. 1/10 of the weight of a bag of potting soil.
  • Size: 2cuft bag.

More Info

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These are great little cubes of rockwool / stonewool that are used a growing medium in net or regular pots. Perfect for Ebb & Flow and drip irrigation hydroponic systems as well as a medium to hold root balls in Aeroponic and Deep Water hydroponic systems.

Want to try a hydroponic medium along side your soil grow plants in pots?
Just fill up your container with the cubes, water with a hydroponic nutrient and watch your plants grow hydroponically!

Made in Denmark since 1969, rockwool (also called stonewool) is widely recognized as the ideal growing substrate. For any growing application, rockwool offers speed, ease of use and cleanliness. Grodan and Paragro rockwool is known for its top quality, consistency and performance.


Weight 8 lbs
Dimensions 29 × 19 × 4.5 in

Product Category

Soil & Grow Mediums


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