Check the listing for details. Resolute Prodiamine 4 FL Herbicide - 2.5 Gallon. Condition: New. Listed at 350.00 USD. Resolute 4FL Herbicide For selective pre-emergent control of grass and broadleaf weeds in established turf grasses (except golf course putting greens); container, field-grown, and landscape ornamentals; established perennial and wildflower plantings; and Christmas tree farms. Resolute 4FL controls susceptible weeds by preventing the growth and development of newly germinated weeds. Weed control is most effective when Resolute 4FL is activated by at least 0.5 inch of rainfall or irrigation or shallow incorporation (1-2 inches) before weed seeds germinate and within 14 days following application. Rate of use: 0.5-1.1 ounces per 1000 square feet; maximum application rate varies by turf species. See the label for full directions. Active ingredient: Prodiamine 40.7%