How much Trimec Crabgrass Concentrate should I mix in 4 gallons of water
Answer:
Trimec Crabgrass Concentrate is mixed at 2.5 fl. oz. (5 Tbsp) in 1 gallon of water to treat 400 sq. ft. For a 4 gallon sprayer, you would mix 10 oz and will cover about 1,600 sq ft.