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Common Perennial/Biennial Weeds—Established Stands

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  • Bermudagrass
  • Bindweed
  • Curly dock
  • Johnsongrass

Names link to more information of identification and biology.

Click on photos to enlarge

(Cynodon dactylon): Grass family; perennial; first leaves with somewhat rough surface; ligule surrounded by ring of hairs with tuft of long hairs on either side; auricles absent; stem flat, wiry, and without hairs.

(Convolvulus arvensis): Morningglory family; perennial; seed leaves nearly square, with shallow notch at tip; early true leaves spade shaped; petioles flattened.
Curley dock
Curly dock
(Rumex crispus): Buckwheat family; perennial; seed leaves succulent and 3 times longer than wide; young seedlings vary in color, from entirely green to red tinged in cooler months; petioles of young seedlings ribbed with bases extending onto stem.

(Sorghum halepense): Grass family; perennial; first leaves with white midvein, 8 times longer than wide and rolled in bud; ligule membranous below and fringed or toothed above; no auricles.

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