High Plains Gardening
The gardening website of the Texas High Plains Region
Bigelow's tansyaster is easy to confuse with Tahoka daisy but is not as showy. Bigelow's aster is a fall blooming biennial, with far fewer purple rays and a smaller, yellow brown center disk. It populates plains in Colorado, Arizona and New Mexico. In the fall, whole fields will wear a purple haze due to this tansyaster.
Useful for larger areas with poorer soil where purple fall color is needed to contrast with the golden flowers of broom snakeweed.