How to Manage Pests

Pests in Gardens and Landscapes

Cosmos—Cosmos spp.
Family Asteraceae (Sunflower family)

Plant Identification

Cosmos may be annual or perennial plants often planted in borders or around shrubs.  Flowers bloom in the summer and fall and vary in form and color, attracting butterflies.  Plants have slender branching stems and finely divided leaves.  Annual forms tend to reseed in undisturbed areas.

Optimum conditions for growth

Cosmos do well in areas with full sun.  They need a moderate amount of water and do best in soils that are well drained and not too rich.

Orange blossom of Cosmos
Orange blossom of Cosmos

Pests and disorders of Cosmos spp.

Invertebrates

Diseases

Environmental disorders

Weeds

Vertebrates


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