Trillium kurabayashi grows fine in clay in the shade in SE Michigan near Ann Arbor. Rimmer SE MI Zone 5 (winter 2015 was a zone 4 winter but 20” or more inches of persistent snow cover January to March) > On Jul 13, 2015, at 10:39 AM, Kathleen Sayce <ksayce@willapabay.org> wrote: > > How this species would do around the Great Lakes I can’t say, but if you live in a warm microclimate area, they might survive.