Water Primrose

Also known as:
Primrose Willow
North America

General description

Perennial wetland shrub <3m high. Woody taproot. Dark green stems branched and hairy when young. Oval to lance shaped leaves covered on both sides with minute, soft hairs. Conspicuous yellow flowers Spring-Autumn. Erect fruit capsule.

Still freshwater, wet soils: wetlands, ditches.

Seed dispersed by waterfowl, human activity, water movement. Vegetative spread by suckers, broken stems.

Clogs waterways and replaces native plants.

Site management

Begin treatment at top of catchment and work downstream. Clean all boat, trailer and fishing gear.

Recommended approaches

1. Weedmat small infestations for at least 4 months.
2. Spray (100mls glyphosate/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

alligator weed
Alternanthera philoxeroides

Alligator weed has opposite leaves and white spherical flowers.

Senegal tea
Gymnocoronis spilanthoides

Senegal tea has opposite leaves and white flowers.

RPMS status

Surveillance - Whole Region
National Pest Plant Accord species - nationwide
water primrose - Main species image