Grodan rockwool starter cubes have a uniform density, firmness and fibrous structure. This means that distribution of water, nutrients and pH-value is also uniform, which has a beneficial effect on germination results.
The fibrous structure, predominantly vertical, gives the cubes the desired resilience. One practical advantage when pricking out is that the cube retains its shape, makes good contact with the transplanting cube and guarantees fast root gro..
£8.95
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