OH2 Ornamental Herbicide OH2 provides preemergence control of weeds in container and field grown ornamentals. OH2 Ornamental Herbicide combines two selective herbicides on one granule, giving the user a broad spectrum of weed control and ornamental plant tolerance. For season-long weed control, repeat herbicide applications are required at approximately 3-month intervals during the growing season. Rate of application: 2.3 lbs./1000 sq. ft., applied at 3 month intervals Active ingredients:1% Pendimethalin2% Oxyfluorfen
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