Decurrent false aster (Boltonia decurrens) is protected federally and in the states of Illinois and Missouri. It is common to wet prairies within the floodplains of rivers, streams and canals found in the watershed of the Illinois River and its confluence with the Mississippi. It is considered to be a fugitive species which moves from habitat to habitat whenever the current population site becomes unsuitable and seed dispersal allows it. The species becomes established and dominant in areas immediately following a flood disturbance but is replaced by other species unless another disturbance occurs in 3-5 years.
Specialized Ecological Services has performed surveys for this species in both Illinois and Missouri.