Claim: Silphium pinnatifidum live in prairies, barrens, and cedar glades (occur where bedrock such as limestone occurs near or at the surface, and have very shallow and little soil development) and because of loss of its fire-dependent habitat, this species is uncommon and is considered vulnerable.
Evidence: Its habitat is prairies, barrens, and cedar glades. Because of loss of its fire-dependent habitat, this species is uncommon and is considered vulnerable. Calcareous glades occur where bedrock such as limestone occurs near or at the surface, and have very shallow and little soil development.