My single impatients are just beautiful but by doubles are giving me fits. One of them got really leggy, so I cut it back. It came back beautifully but the buds drop before it blooms and the leaves are curling and now it is getting leggy again. Not mites or any problem like that as far as I can tell. Tried cutting back on water but that just caused it to wilt! I'm ready to give up on it but it's just NOT in my nature.