Water Weeds

Aquatic weeds are plants that invade watercourses, dams and wetlands. These weeds are extremely detrimental to the aquatic environment, where they choke waterways, alter oxygen levels and reduce light penetration.

Most of the water weeds have originated from backyard fish ponds or home aquariums and have been accidentally released into the environment. They have been further spread by deliberate seeding of waterways by black market plant traders and accidentally spread between farm dams via fish, yabbie and eel traps.

Ludwidgia longifolia - leaves and flower
Ludwigia longifolia
© The State of Queensland, Department of Agriculture, Fisheries and Forestry, 2012
Heteranthera reniformis
Water Milfoil Flower (NSW Trade & Investment)
Myriophyllum spicatum
Alternanthera-philoxeroides-0009
Alternanthera philoxeroides