I have four plants in rockwool cubes that I'm planning to simply plant in soil...problem is, only one of the cubes is showing roots...the other three are growing fine, just way slower...no roots visible yet on the sides or bottoms of the cubes... question is, should i wait till all four show roots before I plant in soil, or should I plant the one showing roots now while waiting for the other three to show? OR, can I plant all four now and hope for the best given that they're growing fine in rockwool that's been soaked in nutrient-enhanced water? best, jash