Common Water Plantain

Also known as:
Mad Dog Weed
Family:
Alismataceae
Origin:
Northern Hemisphere

General description

Erect, emergent, perennial aquatic. Fibrous roots, several lance shaped stalked basal leaves with pointed tips (stalks< 50cm, leaves 15-30 cm long). Leafless, branched, triangular flowering stems extend well above the leaf blades, bearing numerous small flowers (Oct-Feb) with three round or slightly jagged, white or pale purple, petals.

Still or slow moving shallow (<0.5m) fresh water. Ditches, margins of lakes, dams and streams.

Seed dispersed on the water, or by waterfowl.

May occasionally be obstructive to waterflow and contribute to silt deposition.

Site management

Recommended approaches

1. Mechanical removal at small sites.
2. For chemical control options contact the ARC.

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

Search tags

RPMS status

Not a legally declared pest plant
common water plantain - Main species image