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The disk flowers of calico aster start yellow and age to dark red-purple. Many other asters have disk flowers that change color with age, but the change is particularly striking in calico aster. The resulting multicolor look of the flowers gave rise to the "calico" in the name.

The asters with small, white flowers can be tricky to identify. For help distinguishing the species, we recommend the web site Asters of New England.

• Family: Aster (Asteraceae)
• Habitat: fields, edges of woods
• Height: 1-5 feet
• Flower size: flowerheads 1/4 to 1/2 inch across
• Flower color: white rays around a yellow to red-purple disk
• Flowering time: August to October
• Origin: native