Weed Habitat 

• Native to South America, Alligator weed is an extreme threat to freshwater wetlands and river systems throughout much of Australis.
• Reproduces via fragments of stem dispersed by flowing water, seed is rarely viable.
• Tolerant of low level salinity.

Description 

• Perennial plant to 7cm high, grows as a trailing terrestrial or floating aquatic herb.
• Dark green leaves in opposite pairs along hollow stems, spear-shaped with distinct midrib and smooth edges, no leaf stalk.
• Small white flowers, papery to touch, carried on short (2-7mm) stalks in leaf axils.
• On land, produces underground stems to a depth of 1m.
• Forms sprawling interwoven mats to 1m thick in aquatic situations.