Save the time and money you're wasting on hand weeding! Liquid concentrate to be mixed for surface application. Active ingredient is oryzalin 40.4. Use for selective control of grasses and weeds. Surflan is naturally orange in color, acting as a spray marker during application. May temporarily discolor sprayed surfaces. May be applied with mulch colorants for revitalized color and weed control. Up to 8 months control of many broadleaf and grassy weeds in: landscape, container, and field grown ornamentals; non-bearing citrus, fruit and nut trees; berries; vineyards; and Christmas tree plantations. Application rates vary depending on species and length of control. Usually 1.5 - 3 ounce per 1000 square ft. 2 1/2 gallons.