25mm Rockwool Cubes (Tray of 150 Cubes)


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Ideal for starting cuttings and seeds, these allow new roots access to ample water and oxygen. Recommended for later use in conjunction with larger cubes. These large starter cubes are compatible with the large hole larger cubes.

All rockwool must be soaked for 24hours in water of a pH between 5.5-5.8 to enusre the pH of the rockwool is ok for plants to be grown in it. Consider adding a dose of root stimulator or similar to this water to enusre fast, healthy growth of your cuttings or seedlings.