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How to Manage Pests

Identification: Weed Photo Gallery

Field madder

Scientific name: Sherardia arvensis (Madder Family: Rubiaceae)

Life stages of Field madder Flowers Infestation in turf

Click on image to enlarge

DESCRIPTION:
Field madder is a warm-season annual broadleaf weed. Cotyledons (seed leaves) are egg shaped, with the narrow end at the base, nearly as wide as long, and often with an indented tip. The stem above the cotyledon is square in cross-section. True leaves are 1/2 inch (12 mm) long, pointed, rough-edged, and arranged along the stem in whorls of fours, fives, or sixes. Stems are widely branched and spread to 10 inches (25 cm) long. Blue or pink flowers are very small and clustered in groups on tips of 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/field_madder.html revised: November 17, 2008. Contact webmaster.