Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.
- 98 Rockwool Cubes for Hydroponics – Includes two half-sheets of 49 plugs (98 total) for easy handling and efficient shipping.
- 1.5" Rock Wool Planting Cubes – Perfect size for starting seeds and rooting cuttings in hydroponic growing systems or propagation trays.
- Clean and Ready to Use – Made from natural basalt rock and designed to support even water distribution for reliable seed starting and root development.
- Ideal for Hydroponics & Soilless Growing – Use with DWC, NFT, ebb and flow, or any hydroponic system for consistent, clean root zone management.
- Fits Standard Trays – Each sheet fits into standard 10x20 propagation trays. Pre-formed holes make seed or clone placement fast and easy.
- 98 Rockwool Cubes for Hydroponics – Includes two half-sheets of 49 plugs (98 total) for easy handling and efficient shipping.
- 1.5" Rock Wool Planting Cubes – Perfect size for starting seeds and rooting cuttings in hydroponic growing systems or propagation trays.
- Clean and Ready to Use – Made from natural basalt rock and designed to support even water distribution for reliable seed starting and root development.
- Ideal for Hydroponics & Soilless Growing – Use with DWC, NFT, ebb and flow, or any hydroponic system for consistent, clean root zone management.
- Fits Standard Trays – Each sheet fits into standard 10x20 propagation trays. Pre-formed holes make seed or clone placement fast and easy.
