Biddy-Biddy

Biddy-biddy is a low-growing, mat-forming perennial forb native to New Zealand and parts of Australia, but introduced and invasive in the Pacific Northwest. It spreads aggressively by creeping rhizomes and by its distinctive burr-like seed heads, which attach to animals, clothing, and equipment. The compound leaves are glossy green above and silvery beneath, giving it a distinctive appearance. Biddy-biddy often invades dunes, grasslands, and disturbed areas, where it displaces native groundcovers and alters soil composition, making management difficult once established.