rock wool into soil?

i have just been given x 4 plants from seed aprox 15 inches high (abut 6 weeks old) and topped. They have been rooted in a rock wool cube, and placed in a small bucket of clay balls......I would like to transfer these into soil if at possible, and wondered if this could be done, as he rock wool if dense with roots........any suggestion or guidance please....cheers

The roots will grow out of the rockwool, into the soil. Shouldn't be a problem. I'd do it during a dark period, tho, to lessen the shock on the plants.