Hi
Not sure I can be of much help as I grow them as yard plants both outside and in a shadehouse. Mine always flower heavily in the spring followed by a lot of yellowing leaves
which are soon replaced by new ones.. This is what always happens.
You've never had this happen before.?? How are the leaves replaced?? gary

Yes I've had leaves turn yellow and die and are replaced. But never this many at one time. It's probably a good 1/3 or more of the leaves doing it all at once. I've just never seen it do it to this extent before. I'm afraid it's going to die. If anyone might have any ideas?? Goodness I sure would appreciate it.

It's looking worse tonight :( This is not good. *sigh*