it did not take long for my banana's to send out roots into the substrate. In fact, I had wanted to move the plant and found to my dismay that it was FIRMLY anchored. The roots had to have been quite long as no other plant ever resisted that much. The bananas' as TwoHobbies mention, do not get buried and there are 2 types of leaves, one at the banana end of the plant and then those at the ends of the runners that occur. As far as "can" it be tied to driftwood, I would guess it could, but with my experiences with the plant, I think it is happier when it can root itself.