Trillium undulatum is one of the more distinctive species. Ranging far north [Michigan to Nova Scotia] and south [along Appalachian Mountains and Blue Ridge] in cool environments, it [a]lways grows in strongly acidic humus-rich soils and blooms late April to June, depending upon latitude and elevation. Trillium undulatum is the most difficult eastern Trillium to cultivate outside its native habitat. Case, Frederick Jr. et al. Trilliums (Timber Press 1997). Thanks for sharing!
