Skip to Content
Return to Home Page
Statewide IPM Program, University of California

Tarweeds  (Hemizonia spp.)

Click on images to enlarge 

Life stages of Tarweeds parrys tarweed flower threeray tarweed flower parrys tarweed seed fitchs tarweed seed fitchs tarweed seedling

Tarweeds, which include several species in the sunflower family, occur throughout California and are found in rangelands, pastures, and roadsides. All have sticky, heavily scented leaves. Shown here is three-rayed tarweed.

Mature plant

Mature tarweeds range from about 1 to 1-1/2 feet (30–45 cm) high. Lower leaves are deeply lobed and lancelike. Upper leaves are flattened against the stem, glandular and hairy.


The petals have three-toothed edges and may be yellow or white depending on the species and variable in number from three to many per flower.

More information