Baccharis, Groundsel Bush

North America

General description

Erect, densely branched, evergreen shrub or small tree <2.5 tall. Green stems turn brown with age. Dull green, waxy, wedge-shaped leaves with a few teeth near tip. Many small cream or white flowers (Mar-May) in small heads at end of branches. Seed straw-coloured with tufts of silky hairs.

Disturbed forest, coastal swampland, degraded pasture. Prefers warm, humid conditions, Tolerates a wide range of soil conditions.

Seeds easily dispersed by wind & water, & also on machinery, in agricultural produce, gravel etc.

A threat to pastoral grazing, unpalatable & toxic to livestock.

Site management

Good pasture management, i.e. maintaining a vigorous pasture will suppress infestation.

Recommended approaches

1. Grub out small plants or infestations removing most of taproot.
2. Spray in spring (100ml glyphosate/10L or 5g metsulfuron/10L).

Caution: when using any herbicide or pesticide PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.

Similar species

Chrysanthemoides monilifera

Boneseed has yellow flowers which appear from September - February. Seed pods are spherical ripening from green to black.

Search tags

RPMS status

Surveillance - Whole Region
baccharis, groundsel bush - Main species image