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How to Manage Pests

Identification: Weed Photo Gallery

Prickly lettuce

Scientific name: Lactuca serriola (Family Asteraceae)

Life stages of Prickly lettuce Leaves Flowers Seedling Mature plant

Click on image to enlarge

DESCRIPTION:
Prickly lettuce, a common winter weed in the Central Valley of California, germinates with the onset of winter rains. Prickly lettuce seedlings have cotyledons that are about twice as long as they are wide. The first true leaves have rounded margins. Leaves are alternate, clasp the stem, and may be lobed or entire with prickly margins. Prickly lettuce grows as an erect annual or biennial. The stem may be prickly near the base. The mature plant bears numerous creamy yellow flowers on branches off the main stems.

Broadleaf ID illustration.


Statewide IPM Program, Agriculture and Natural Resources, University of California
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For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/WEEDS/prickly_lettuce.html revised: March 11, 2008. Contact webmaster.