Rotala: A New Aquatic Invader in Southern Florida
Rotala infesting a flood control canal in Naples, Florida
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How to Cite

Gettys, Lyn A., and Carl J. Della Torre. 2014. “Rotala: A New Aquatic Invader in Southern Florida: SS-AGR-376/AG381, 4/2014”. EDIS 2014 (4). Gainesville, FL.


Rotala is a relative newcomer to Florida. Since it was first found in Coral Springs in 1996, it has established large, but mostly isolated, populations throughout the southern regions of Florida. It is especially problematic in Lee and Collier Counties and along the west coast. Extremely dense submersed populations and large thick mats dominate the surface of the water, greatly reducing ecosystem services, because oxygen level and light penetration are hampered. Because the rapid and vigorous growth of rotala inhibits water flow, the ability of infested canals to function properly in flood control systems is greatly hindered. Management of this aquatic weed is a major concern for resource managers. This 4-page fact sheet was written by Lyn A. Gettys and Carl J. Della Torre III, and published by the UF Department of Agronomy, April 2014.

SS-AGR-376/AG381: Rotala: A New Aquatic Invader in Southern Florida (
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Fishel FM, JA Ferrell, GE MacDonald and BJ Brecke. 2012. Florida's Organo-Auxin Herbicide Rule -2012. Gainesville: University of Florida Institute of Food and Agricultural Sciences.

FLEPPC. 2011. Florida EPPC's Invasive Plant Species List.

Jacono CC and VV Vandiver Jr. 2007. Rotala rotundifolia, purple loosestrife of the south? Aquatics 29(1):4-9. Online at

Puri A and WT Haller. 2010. Best Management Practices (BMPs) for Rotala and Nymphoides Control. FWC Task 155-Annual Report, June 2010.

UF/IFAS Invasive Plant Working Group. 2014. UF/IFAS Assessment of Non-Native Plants in Florida's Natural Areas.