Senegal tea plant (Gymnocoronis spilanthoides)
Senegal is a hardy plant with a rapid growth rate, found on the banks of watercourses and in shallow water. 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 Senegal tea plant 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 Senegal tea plant, visit https://weeds.dpi.nsw.gov.au/Weeds/SenegalTeaPlant