The following information is derived largely from monitoring records of the Illinois Department of Natural Resources but some may come from the literature and other sources. Initial population was 13 flowering plants and 4 sterile plants at inception in 1988 increasing to 35 flowering and 22 sterile at the end of monitoring in 1993. There was a severe drought in 1988 through 1989 then near normal climate until very wet in 1993. Mostly level here although it occurs on gentle slopes in other nearby populations.
Aspect seems unimportant.
A plant that was shaded by an oak sprout was suppressed to near death. Monitoring was done in mornings and flowers open afternoons. Single roots develop as many as 3 crowns of leaves but these are always easily identified as a single plant and not vegetative reproduction. The tiny seeds germinate in openings between grass clumps in spring under high moisture and high light levels. Seed stratification needs are not known.