Loropetalum lost all its leaves
First of all, I have to say I am a novice to gardening and pretty much don't know anything. I had some loropetalum planted a few years ago in our flower beds and they were fine. But last year I noticed one of them was losing its leaves. I wasn't sure what was wrong but I didn't do anything about it. Anyway, now I can see 3 of the 5 loropetalums are losing their leaves too. Not sure what's wrong. I have some Indian Hawthorne in the same bed and they are all fine. The Indian Hawthorne are in the front row of the bed and the loropetalum are in the back row. Are the loropetalum with no leaves dead?
If anyone has any insight on what could be the problem that would be great. Thanks.