Thanks Elizabeth. And I thought mine was unique! I wonder how common this is, and whether other people have seen it in previous years? When strange things like this happen, and flowers develop abnormally, this can be called fasciation. A shock of some sort, or damage to the growing bud, causes abnormal growth. I know for certain that no hormone weedkillers have been used in my garden, so this can't be the cause. What do you think?