Tomcat Clover (Trifolium willdenovii) is an annual forb native to Western US states (such as California, Oregon, and Washington) that can thrive in USDA Zones 7–9 as a cool-season annual. Reaching a mature height of 8–20 inches with an upright to ascending, branching growth habit, it features pinnately compound green leaves and produces large, showy, spiky pink-to-purple flower heads enclosed in leaf-like bracts. It thrives in moist soils, grassy valley slopes, and oak woodlands in full sun to partial shade and is ideal for native annual pasture improvement and nitrogen fixation.
This is an annual herb that typically grows up to 1 foot tall. It is used in wildflower gardens for its attractive flowers and soil enrichment. This plant prefers full sun and is commonly found in grasslands, meadows, and disturbed areas.
Species Attributes
Seeds Per lb
Growing Region
Pacific Northwest, California
Native
Southwest, Pacific Northwest
Life Form
Legume
Life Cycle
Annual
Light Requirements
Sun
Precipitation Requirements
Low
Mature Height
0-1 ft
Flowering Season
Spring, Summer
Cool/Warm Season
Bloat/Non-Bloat
Bloat
Bloom Color
Purple, White
Bunch/Sod
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