so i live in the PNW. we have moss growing everywhere. one of my paphs was rootless. it had no roots for a couple of months. i don't have access to live sphagnum moss so i did an experiment with the moss growing right in my backyard. i potted it up and stuck it in a ziplock bag and within a month i got roots! i was so excited. i'll have to post some pics. i just have to find my camera.