Burdock Clover (Trifolium lappaceum): Uncommon Clover with Burr-Like Seed Heads

Burdock clover is an annual or biennial clover distinguished by its distinctive, burr-like seed heads covered in hooked spines that cling to fur and clothing. It is native to the Mediterranean region but has naturalized in parts of California.

Botanical Profile

• Family: Papilionaceae (or Fabaceae subfamily Faboideae)
• Genus: Trifolium
• Species: lappaceum

Features

Erect to spreading, 1–2 feet tall. Leaves are trifoliate, typical clover. Flowers are small, white to pink, in heads. Seed pods are enclosed in a bur of hooked spines, giving the plant its name.

Culture

Full sun. Adaptable to various soils. Winter annual in mild climates. Self-seeds readily.

Uses

Cover crop, nitrogen fixer, wildlife forage. Burrs can be a nuisance in recreational areas.