I had this beautiful CGN21500 plant that was growing really well here in scorching Las Vegas. I has been hot for a while but only recently my plant's leaves have started drying out and falling off. I know it could just be under watering but this plant has never once wilted. Is it possible for a plant to be under watered and not wilt? If anyone has any thoughts or ideas I would really appreciate it, I don't want to lose this plant. Thank you!!