Preen One, 18 LB, Lawn Care, Delivers 3 Essential Lawn Treatments In 1 Easy Step, Stops Crabgrass & Other Lawn Weeds Of Its Type From Growing All Season Long, Tackles & Kills 250 Of The Toughest Broadleaf Lawn Weeds & Feeds The Lawn For 8 Weeks, Can Be Used On Both Cool Season & Warm Season Grasses As Specified On The Product Label, Apply In Spring For Guaranteed Control Of 250 Types Of Common, Aggressive Weeds Including: Crabgrass, Dandelion, Annual Bluegrass, Marestail/Horseweed, Foxtail, Chickweed, Clover, Creeping Charlie/Ground Ivy, Dock, Henbit, Nettle, Plantain, Purslane, Prostrate Knotweed, Cinquefoil, Spurge, Woodsorrel & More.