Wester Aster (Symphyotrichum spathulatum), sometimes known as Western Mountain Aster or Larger Western Mountain Aster, is a native perennial forb that grows in colonies and can be found in open, wet to dry environments. Its stem is glabrous to hairy, and green to greyish-green in color. Its leaves are alternate, with basal leaves present when it is flowering.
Life Cycle: Perennial
Solar Exposure: Full sun
Bloom Color: Purple
Bloom Time: Late Summer to Fall
USDA PLANTS Database Link
Pictures from https://plants.usda.gov/core/profile?symbol=SYSPS