Water lettuce (Pistia stratiotes)

Water lettuce is a free-floating weed that spreads rapidly and forms dense mats over water bodies. Scattered populations have been recorded in the Sydney region and it may be present in Hornsby Shire in ponds, aquariums, fish tanks, water features, dams, and waterways, dumped in bushland or roadsides, or being sold online. Notify Council if you see this plant in Hornsby Shire or see evidence of it being traded (including online), carried, grown, or released into the environment. Try to avoid water lettuce from being introduced onto to your land. If you find it on your property, prevent it from spreading from your land where possible, especially into bushland areas, watercourses, and dams, or spreading seeds or plant fragments down stormwater drains.

For information on the identification and control of water lettuce, visit https://weeds.dpi.nsw.gov.au/Weeds/WaterLettuce