how long in rockwool?

Never. Rockwool sucks. It holds way too much moisture. Just lay your rooted cuttings directly in the clay pellets. If the roots don't go all the way to the bottom of the pot, then lay them on some capillary matting, and have the matting go to the bottom.
Opie Yutts Reviewed by Opie Yutts on . how long in rockwool? do the plants stay in the rockwool cubes even after you put them in the net pots or do you remove the rockwool at some point? Rating: 5