Populations of decurrent false aster have declined as wetlands have been drained and converted to agricultural crop production. Identification Decurrent false aster is a perennial plant that grows one to five feet tall and occasionally reaches heights of over six feet. It blooms from July to October and bears seeds from August to October.
Leaves are linear and narrow and have a blue tint.
The lower leaves are broader and larger. The flowers are about the size of a quarter. They occur in branched groups of composite heads with yellow disk flowers and white to purplish ray flowers. Decurrent false aster is closely related to Boltonia asteroides var. Flora of Missouri .