Coefficient of Conservatism:
Coefficient of Wetness:
A showy, large Eurasian garden perennial collected persisting and spreading from cultivation onto a roadside in Gogebic Co. by S. C. Garske in 1998.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 14, 2019. https://michiganflora.net/species.aspx?id=696.