Cressmoor Prairie Nature Preserve is owned by the Shirley Heinze Land Trust and is a state-dedicated nature preserve. Covering 38 acres, it is a black soil prairie representative of one of the rarest ecosystems in the state. The majority of the landscape is in excellent condition, despite a history of agriculture and grazing. This is an extremely high-quality prairie with at least 10 state-listed species of plants and five threatened species of insects that are remnant-dependent. The prairie is managed to reduce woody species and is maintained by fire. In the southeast corner is a small black- and bur oak savanna.
Species list for all plots