I recently bought a Phal and when I got it home it was in desperate need of repotting and most of its roots were rotted (too much moss!). After reading this entire thread, I decided to order some Dyna Gro root hormone to help it grow some more roots since I had to cut almost all of them off...How do I apply the root hormone? Do I mist the plant with it? Do I water the plant and then apply the hormone after? Do I put it directly on the roots?