description Aster Overview
Aster is a common name used for many daisy-like plants in the family Asteraceae, as well as for species in the genus Aster itself. These plants typically produce flower heads with a central disk surrounded by narrow ray florets, and their colors include white, pink, blue, and purple. Many garden asters are herbaceous perennials that flower in late summer or autumn, providing nectar when fewer plants are in bloom. They are grown in borders, meadows, and pollinator gardens, with different species suited to different soils and moisture levels.
help Aster FAQ
Why are some plants sold as asters now labeled Symphyotrichum?
Many North American plants once placed in Aster were reassigned to genera including Symphyotrichum and Eurybia. Garden labels may also use Callistephus or Kalimeris for plants still sold under the broad name aster. [RHS](https://www.rhs.org.uk/plants/aster)
What makes an aster flower head look like one large flower?
It is a composite head made of central disk florets surrounded by narrow ray florets. This structure is characteristic of the daisy family, Asteraceae.
Do garden asters bloom in spring or fall?
Many garden asters are late-season plants that flower from late summer into autumn. The name Michaelmas daisy is commonly used for autumn-flowering aster relatives.
Is China aster a true Aster species?
No. China aster is Callistephus chinensis, an annual in Asteraceae, while Aster is a separate genus.
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