osmanthus fragrans dropping leaving when flowering
I have got 2 osmanthus fragrans about 2 months ago, each was about 15". I put them in their containers with half potting mix, half peat moss, and some acid loving plant fertilizer. since then they have been doing well. a few days ago both started flowering, which really surprised me pleasantly. but one, which flowered 3 days earlier than the other started dropping a lot of leaves. The other one is not doing that, however. Both have been treated in the same way so I am wondering what is going on with the one dropping leaves. Is it common for osmanthus fragrans to drop leaves when flowering?
Thanks for suggestions!