
J. Bryan Unruh, Darcy E. P. Telenko, Barry J. Brecke, and Ramon Leon2
Yellow woodsorrel (Oxalis stricta) is an upright, herbaceous perennial with hairy stems. Leaves are alternate and divided into three partly folded, deeply cut, heart-shaped lobes. Flowers are bright yellow with five petals on stalks bent below the fruit and attaching to a common point. Fruit are narrow, "okra-like" capsules. Florida yellow woodsorrel (O. florida) is similar in appearance to yellow woodsorrel, but has slenderer stems, larger leaves, and a smooth to sparingly hairy, smaller capsule. Reproduction occurs via seed.
(Always refer to the label for specific uses, application rates and turfgrass tolerance)
Preemergence: dithiopyr, indaziflam, isoxaben, napropamide, oxadiazon, pendamethalin
Postemergence: bromoxynil, carfentrazone, 2,4-D+dicamba, dicamba, imazaquin, metsulfuron, metribuzin, sulfentrazone, sulfentrazone+quinclorac, thiencarbazone+iodosulfuron+dicamba, thiencarbazone+floramsulfuron+halosulfuron, triclopyr +clopyralid, trifloxysulfuron
Preemergence: atrazine, dithiopyr, indaziflam, isoxaben, napropamide, oxadiazon, pendamethalin
Postemergence: atrazine, bromoxynil, carfentrazone, 2,4-D+dicamba (follow label recomendations to minimize turf injury), imazaquin, metsulfuron, sulfentrazone, thiencarbazone+iodosulfuron+dicamba
Preemergence: atrazine, dithiopyr, indaziflam, isoxaben, napropamide, pendamethalin
Postemergence: atrazine, bromoxynil, carfentrazone, 2,4-D+dicamba, dicamba, imazaquin, mesotrione, metsulfuron, clopyralid, sulfentrazone, sulfentrazone+quinclorac, thiencarbazone+iodosulfuron+dicamba, triclopyr +clopyralid
Preemergence: dithiopyr, indaziflam, isoxaben, napropamide, pendamethalin
Postemergence: bromoxynil, carfentrazone, 2,4-D+dicamba, dicamba, triclopyr, sulfentrazone, triclopyr +clopyralid
Preemergence: dithiopyr, indaziflam, oxadiazon, pendamethalin
Postemergence: carfentrazone, sulfentrazone, sulfentrazone+quinclorac
Preemergence: atrazine, dithiopyr, indaziflam, isoxaben, oxadiazon, pendamethalin
Postemergence: atrazine, bromoxynil, carfentrazone, 2,4-D+dicamba, dicamba, imazaquin, metsulfuron, sulfentrazone, sulfentrazone+quinclorac, thiencarbazone+iodosulfuron+dicamba, triclopyr+clopyralid, trifloxysulfuron
Preemergence: oxadiazon
Postemergence: bromoxynil, carfentrazone, 2,4-D+dicamba, dicamba, sulfentrazone, sulfentrazone+quinclorac, triclopyr +clopyralid
Refer to the publication Pest Control Guide for Turfgrass Managers at http://turf.ufl.edu/pdf/2012_UF_Pest_Control_Guide.pdf for brand names associated with chemical names listed.
This document is ENH1124, one of a series of the Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date June 2009. Revised February 2013. Visit the EDIS website at http://edis.ifas.ufl.edu.
J. Bryan Unruh, professor, Environmental Horticulture Department; Darcy E. P. Telenko, postdoctoral research associate; Barry J. Brecke, professor, and Ramon Leon, assistant professor, Agronomy Department; West Florida Research and Education Center, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, 32611.
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