Peduncles droped off

I notice that every time my H. cinnamomifolia blasts (just did it again)...the whole peduncle falls off. Is this normal for this species or is mine being weird on my? I know there are some that do this, I just am not sure that is one of them. I thought most of those big leafed ones hung on to them.
Marcy

The peduncles on my cinnamomifolia usually stay but had one or two that fell off in the past.

Gee, Marcy...have you tried Super Glue? LOL (bad joke?)