growing without netpots
For raft culture, I was wondering if it is a good idea to grow lettuce on rockwool only without net pots.
I'm thinking of cutting a little below 1x1 inch square shaped hole in the styrofoam. I will then insert my 1x1x1 rockwool cube with my lettuce seedling in it. Will the grip of the rockwool on the hole be enough to support the plant once it grows big?