Interesting. Is it the first year it's done this?

It's the first season with these specimens and the first time I've had them do it, too.

I presume it was a weather anomaly. :)

Steven

Here in the South, that happens to me when the weather is really hot--consistently in the 90's. If you are having a hot spell, that might be the reason.

Who would have "thunk"? You'd expect shriveled small blooms in strong heat but these don't look shriveled, just single. Good to know. Post a picture when it returns to normal :-)