WSU Whatcom County Extension

Integrated Pest Management for Blueberries

White Clover

(Trifolium repens)

Perennial Broadleaves

 

White Clover

Habitat Characteristics

Weed of turfgrass, landscapes, orchards, and nursery crops. Grows in multiple soil types, especially clays, and tolerates a wide range of soil acidity.

 

Identification

A mat-forming perennial with low creeping branched stems that root at the nodes. Leaves are trifoliate, smooth, grayish green on the lower surface, green on the upper surface, usually with a light green splotch near the base of each leaflet. The rounded flower heads are an aggregate of 20-40 individual white flowers. Flowers turn brown and persist while the fruiting pods develop.

 

Life History

Seeds germinate in the spring, early summer, or early fall. Flowers are present throughout the summer. Foliage may discolor and decompose over the winter. Stolons persist and produce new shoots in early spring.

 

Management

Cultural Techniques

     - Mulching may help to control white clover

     - Clover can be excluded by growing a thick stand of grass or other ground cover.

Chemical Techniques

     - See Herbicide Efficacy Table (pdf)

 

Web References

USDA – NRCS Plant Profile, White Clover
http://plants.usda.gov/java/profile?symbol=TRRE3

University of California IPM, Weed Gallery, White Clover
http://www.ipm.ucdavis.edu/PMG/WEEDS/white_clover.html

Invasive Species, The Source for Information and Images of Invasive & Exotic Species, White Clover
http://www.invasive.org/browse/subject.cfm?sub=6557

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WSU Whatcom County Extension • 1000 N. Forest St., Bellingham, WA 98225 • (360) 778-5800 • whatcom@wsu.edu