T. Queen Fabiola as I have it is tolerant of summer moisture as is T peduncularis but peduncularis requires perfect drainage for wet summers here. T laxa, T peduncularis, and T hyacintha all tolerate a summer drought in the green house for me. T Queen Fabiola seeds in the open sand plunge and has always been variable in colour, so I suggest that the cultivar name is no longer of any value, as commercial stocks are probably equally varied. My observations are based on a limited number of accessions but from a variable climate conditions. Peter (UK) On Fri, Sep 27, 2013 at 9:07 PM, Giant Coreopsis <giantcoreopsis@gmail.com>wrote: > This discussion reminds me of a question I have had about these species. I > read that T. peduncularis and to a lesser degree T. hyacinthina are > moisture-loving. Do they nevertheless require dry dormancy in the heat of > summer? Regards, Chris > >