News Releases

Lake Istokpoga primrose willow maintenance treatment scheduled to start Aug. 18

News Release

Monday, August 17, 2015

Media contact: Gary Morse, 863-648-3200

Maintenance spraying of primrose willow along Lake Istokpoga’s west shore, via helicopter, is scheduled to begin on Aug. 18, weather permitting. The 255-acre conservation maintenance project is a cooperative effort between the Florida Fish and Wildlife Conservation Commission (FWC) and the South Florida Water Management District.

“A record number of snail kites that nested this spring and summer in open, restored wetland areas along the west shore and islands is a good indicator that management and restoration efforts for the lake are on the right track,” said Kelle Sullivan, FWC aquatic plant biologist.

Water primrose, as it is also known, is an invasive aquatic plant with yellow flowers. It is commonly found growing in thick stands around the edges of water bodies and along ditch banks. Left untreated, primrose willow can turn a productive, open marsh area, preferred by fish and wildlife, into dense stands that have less benefit to fauna.

The FWC will treat the area with Clearcast and Clipper aquatic pesticides, which are approved by the U.S. Environmental Protection Agency for use in lakes and have no restrictions concerning fishing or swimming, and no irrigation restrictions for the low rates at which the treatment is being applied. Air safety issues, however, require areas being treated to be closed for a short time while low-flying aircraft are spraying. 

For questions about this treatment, contact Kelle Sullivan, regional biologist with the FWC’s Invasive Plant Management Section, at 863-578-1120.


Primrose willow, a native invasive aquatic plant, is also known as water primrose. FWC photo by Gary Morse.


Primrose willow often grows in dense stands that dominate other native plants more beneficial to fish and wildlife. FWC photo by Gary Morse.

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