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How to Manage Pests

Identification: Weed Photo Gallery

Lawn burweed

Scientific name: Soliva sessilis (Sunflower Family: Asteraceae)

Life stages of Lawn burweed (spurweed) Flowering head Mature plant

Click on image to enlarge

DESCRIPTION:
Lawn burweed (spurweed) is a small low growing winter annual broadleaf plant often confused with pineapple-weed or brassbuttons. The cotyledons (seed leaves) are oblong to narrowly oval and fused at the base. The first leaf pair is lance shaped, often sparsely haired, with long tapered bases. Subsequent leaves are deeply dissected and covered with fine hairs. Stems are branched and are dark-colored or purple-spotted. Seed, when formed, appears in a small, spined bur that you can feel readily when you press a clump with your hand. The flower heads are inconspicuous in the leaf axil and have small spines.

Broadleaf ID illustration.

Text modified from Elmore, C.L., W.B. McHenry, and D.W. Cudney. 1989. Weed control in large turf areas. Chapter 3 in Turfgrass Pests. UC ANR Publication 4053.


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