Hydrilla verticillata

Hydrilla infestation in Florida


Hydrilla: An Invasive Water Weed 

The highly invasive aquatic plant, Hydrilla verticillata, commonly known as 'hydrilla' or 'water thyme' was found in the Cayuga Inlet in 2011.  The Hydrilla Task Force is committed to eradication of hydrilla in the Cayuga Lake Watershed and to stopping its spread elsewhere.

Farmer's market side at johnson's boat yard view toward cornell aug 10 2011

2015 Efforts

Sonar H4C treatment took place in the SE corner of Cayuga Lake on Tuesday, July 21. An up-to-date version of fluridone water monitoring results in the SE corner is available.

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Report hydrilla

Report Hydrilla Suspects!

Think you've found hydrilla among the Cayuga Lake Watershed? Report a suspect by clicking here!

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Dan munsell treman summer

How You Can Help!

Everyone can help in the fight against hydrilla. Learn more about what you can do to stop the spread of this invasive water weed.

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Allied biological 3

Management Options

There are four main management options for hydrilla: biological, chemical, mechanical, and physical.

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Florida channel cleared

Economic Impacts

Hydrilla can reduce water flow, clog or damage water control structures, reduce fish populations, and compromise recreational uses such as boating & swimming.

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Blue-Green Algae

Studies have linked invasive hydrilla to a deadly toxin produced by blue-green algae, resulting in illness and death of wild birds and domestic pets.

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Sharon Anderson
Environment Team Leader
(607) 272-2292 ext. 156

Last updated July 31, 2015