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> Departments > Natural Resources > Weed Control District > Noxious and Troublesome Weeds > Eradication > Hydrilla
Hydrilla (Hydrilla verticillata)
Hydrilla is extremely difficult to control. It is often found spreading after extensive 2,4-D use in public waters. Hydrilla has small, pointed leaves that are arranged in whorls of 4 to 8.