Perennial bottom-rooted aquatic herb. Stems are long, branched and creeping below the water's surface, with adventitious roots. Leaves are floating, heart-shaped, < 15 cm in diameter and green, with purple undersides and scalloped margins. Flowers are yellow, borne singly or in clusters on emergent stalks, and have fringed petals. Seed capsules are green, flattened and contain many hairy-edged seeds.
To help protect our environment:
Rivers, lakes, ponds, reservoirs, wetlands, dams, ditches.
Seeds dispersed by water and waterfowl. Human-mediated dispersal through deliberate plantings, ornamental pond escapes and movement of contaminated boats and equipment.
Potential to form dense mats, outcompeting native vegetation and impeding access to waterways.
Increasing shading over the waterway can reduce an infestation. Spraying aquatic weeds result in plants rotting in the water. This decreases dissolved oxygen in the water and in large amounts can kill aquatic life. Consider pulling out and only spraying regrowth in spring.
CAUTION: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.