How to Manage Pests

Pests in Gardens and Landscapes

Aster—Aster spp.
China aster—Callistephus chinensis
Family Asteraceae (Sunflower family)

Plant Identification

True asters are beautiful perennial plants with flowers of various colors including white, blue, purple, red, or pink.  The centers of the flowers are mostly yellow.  China asters are annual plants.  Flower form and color varies. Asters are often planted in borders, around shrubs, or in containers.  Asters generally bloom in late summer to early fall, attracting butterflies.

Optimum conditions for growth

Asters and China asters do well in areas with full sun although some species thrive in shade.  They do best in fertile soil with regular watering.

Pink and purple blossoms of China aster
Pink and purple blossoms of China aster

Pests and disorders of Aster spp. and Callistephus chinensis


Invertebrates (cont.)

  • Weevils
  • Whiteflies
    • Greenhouse whitefly
    • Iris whitefly
    • Silverleaf whitefly
    • Sweetpotato whitefly


Environmental disorders



Statewide IPM Program, Agriculture and Natural Resources, University of California
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