Hello!

Two weeks ago I purchased a rooted cutting of P. dodsoniana, which has been growing happily here in FL. I have watered it twice since receiving the plant, and it has put out new growth on all growth points. However, I noticed recently that the main stem was turning white and pitted in a single area -- I figured this was either rot or sunburn, but can't tell which one it is!!! There is no black coloration in the pitting, so I don't think it's black rot, but it is a kind of sickly tan... This afflicted region of the stem was covered by a piece of pumice rock before I noticed the damage, but the whole plant has been in full Florida sun for ~7 hours a day (with indirect light this is much longer obviously) since I received it. As such, I don't really know whether to pluck off the side growths to save them for propagation, or if I just need to move the plant underneath some shade. Here are some pictures of the afflicted area. It's at the very base of the plant. Please let me know what you think!!! (Sorry, I don't have a camera so I had to use my cell phone)