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- Sunflower Family: Asteraceae
Tarweeds (Hemizonia spp.)
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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.
Flowers
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
- Broadleaf ID illustration
- Calflora's distribution map
- For agriculture: UC IPM Pest Management Guidelines
