Old World Diamond-Flower Biology and Management in Turf1
Old world diamond-flower (Hedyotis corymbosa) is a smooth, spreading summer annual. It has branched stems with opposite, narrow leaves. Flowers are white, usually with two or more on long stalks extending from the tip of a common long stalk. Flowers occur from midsummer until frost. Reproduction occurs by seed. Found in moist areas, especially areas that have been disturbed.
Credit: B. Brecke
Credit: D.E.P. Telenko
Credit: B. Brecke
Herbicide Options for Controlling Old World Diamond-Flower in Florida Turfgrass
(Always refer to the label for specific uses, application rates, and turfgrass tolerance.)
Refer to the publication Pest Control Guide for Turfgrass Managers at https://nwdistrict.ifas.ufl.edu/phag/files/2015/04/2012_UF_Pest_Control_Guide.pdf for brand names associated with chemical names listed.
Bermudagrass
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Preemergence: none
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Postemergence: carfentrazone
St. Augustinegrass
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Preemergence: none
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Postemergence: atrazine, carfentrazone
Centipedegrass
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Preemergence: none
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Postemergence: atrazine, carfentrazone
Bahiagrass
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Preemergence: none
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Postemergence: carfentrazone
Seashore paspalum
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Preemergence: none
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Postemergence: carfentrazone
Zoyziagrass
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Preemergence: none
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Postemergence: atrazine, carfentrazone
Perennial ryegrass
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Preemergence: none
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Postemergence: carfentrazone
