What is Hydrilla?
Hydrilla verticillata is a freshwater plant with stems that can grow up to 25 feet long. The plant branches out horizontally at the water's surface and creates dense mats. Hydrilla has small, pointed, serrated leaves arranged around the stem, typically in whorls of five. Hydrilla grows quickly and creates dense mats that can block out sunlight and harm native plants, and its density can also kill fish by decreasing oxygen levels.
Hydrilla is native to Australia, Asia and Africa and is believed to have made its way to the U.S. as an aquarium plant.
Hydrilla is often spread by boaters, as hydrilla fragments can cling to boats and trailers. Very small fragments of hydrilla can start new populations.
Date | Document |
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December 19th, 2022 | Presentation by Nicole White, Croton Hydrilla Control Project Manager, at the December 19th Board Meeting |
December 19th, 2022 | 2022 Update Powerpoint Presentation |
September 6th, 2022 | Status Report |
August 26th, 2022 | Status Report |
August 5th, 2022 | Status Report |
July 22nd, 2022 | Status Report |
July 8th, 2022 | Status Report |
June 24th, 2022 | Status Report |
June 10th, 2022 | Status Report |
May 29th, 2022 | Status Report |
October 26th, 2021 | Extension of Natural Resource Permits |
September 20th, 2021 | Status Report |
September 3rd, 2021 | Status Report |
August 20th, 2021 | Status Report |
August 6th, 2021 | Status Report |
July 26th, 2021 | Status Report |
July 9th, 2021 | Status Report |
June 11, 2021 | Status Report |
May 28, 2021 | Status Report |
July 31, 2020 | Status Report |
July 17, 2020 | Status Report |
July 3, 2020 | Status Report |
June 19, 2020 | Status Report |
June 5, 2020 | Status Report |
April 2020 | NYS DEC Notice |
October 18, 2019 | Status Report |
October 4, 2019 | Status Report |
September 20, 2019 | Status Report |
September 6, 2019 | Status Report |
August 23, 2019 | Status Report |
August 9, 2019 | Status Report |
August 1, 2019 | Plant Condition Photos |
July 26, 2019 | Status Report |
July 12, 2019 | Status Report |
June 28, 2019 | Status Report |
June 15, 2019 | Status Report |
May 23, 2019 | Treatment Notification |
April 8, 2019 | 2018 Annual Update |
November 30, 2018 | Five-Year Management Plan |
November 16, 2018 | Status Report |
November 2, 2018 | Status Report |
October 19, 2018 | Status Report |
October 5, 2018 | Status Report |
September 21, 2018 | Status Report |
September 13, 2018 | Treatment Notification |
August 24, 2018 | Status Report |
August 10, 2018 | Status Report |
July 27, 2018 | Status Report |
July 13, 2018 | Status Report |
June 29, 2018 | Status Report |
June 15, 2018 | Status Report |
May 2018 | NYS DEC Resuming Treatment of Hydrilla |
April 2018 | NYS DEC Notice |
February 2018 | NYS DEC Letter Re: Wetlands Permit |
March 2017 | Resolution to Approve Chazen Proposal |
March 2017 | Memo from Water Control Commission |
February 2017 | Chazen Companies Proposal - Review of NYSDEC Wetlands Permit |
January 2017 | Letter from Water Control Commission & Waterfront Advisory Committee |
May 2016 Notification | NYSDEC |
| Hydrilla PowerPoint Presentation |
| Information from DEC Website |