All my phals. are blooming and new buds opening each day. They're all doing great except this little one. Each time it forms a new bud, turns yellow & drops off. We've had brutal weather lately and I have moved this little guy around a bit, but I found Jerry was right about the temperatures, the phals. seem much sturdier than I thought, and obviously the rest of them are doing fine. Daytime temp's at 69-70, night about 65. Humidity 40-50%. I can't figure out why I'm losing each new bud.
To put in size perspective: Leaves are 5-6 inches, spikes are about 5" and it's in a 4" azelia pot, medium bark. Hope you can help.