I am not planning to use flowers for anything other than my bridesmaids and (possibly) corsages for the mothers. I want each of my bridesmaids to carry just one single flower. Any suggestions on what type I should use? I was thinking calla lily or daisy, but I don't know what is really "in season" in the fall. Also, do I need to reserve this type of thing with a florist ahead of time? Or can I just pick them up a few days before? Thanks!