Currently, decurrent false aster occurs in association with agriculture and can be locally abundant in marginal, wet lowlands. Landowners can take an active role to protect this species in areas of marginal agricultural habitat. The main threat to this plant is loss of suitable habitat. Decurrent false aster is restricted to floodplain wetlands and requires wet soils and soil disturbance. It also requires full sunlight.
Populations decline as surrounding vegetation begins to compete with the aster.
The amount of available habitat has been reduced by the conversion of wetlands to agricultural areas. Herbicides Herbicide application in areas with decurrent false aster may cause populations to decline. Many populations of the decurrent false aster are on public land, particularly on wetlands managed by the Army Corps of Engineers. These populations are being managed by participating state and federal agencies through periodic flooding and mowing. A few populations occur on private land, often in association with agricultural crop production.