This is SURFLAN AS Specialty Herbicide!  A selective, preemergence, surface-applied herbicide for control of annual grasses and many broadleaf weeds in Landscape Ornamentals, Container Grown Ornamentals, FieldGrown Ornamentals, Christmas Tree Plantations, Drainage Areas under Shadehouse Benches, Ornamental Bulbs, Ground Covers/Perennials, Noncropland and Industrial sites, Non-bearing Fruit and Nut Trees and Non-bearing Vineyards, Established Warm-Season Turf including Bahiagrass, Bermudagrass, Buffalograss, Centipedegrass, St Augustine grass and Zoysia Grass and also Tall Fescue, warm season. The Active Ingredient is Orzalin, 40.4%.  This product may be tank-mixed with RoundUp. (glyphosate) 

8oz Size covers as much as 8,000 sqft

Quart Size as much as 32,000 sqft

One Gallon As much as 126,000 sqft

Last 4-8 months based on application.