If the behaviour of each individual plant were consistant from year to year, according to temperature, then the data from each plant's flowering would be valid. If plants in cooler or moister spots in the same garden behave differently, the data would also be interesting. Peter (UK) On 13 June 2015 at 19:53, Mary Sue Ittner <msittner@mcn.org> wrote: > The leaves on all our A. belladonna are long gone. My experience has been > like Mike's. In my garden different plants bloom (if they bloom as many do > not) at different times, sometimes months apart. So temperature couldn't be > the only factor as my garden isn't that large and they all would experience > approximately the same temperature. When I sent data in before for plants > in my area I recorded the first ones to bloom, but never bothered to send > supplemental data about when later ones bloomed. I wonder if others did the > same. >