ferti lome Weed Free Zone controls over 80 tough broadleaf weeds including clover, ground ivy, spurge, chickweed, dandelion, oxalis, poison ivy, purslane, thistle, wild onion, and many others. It can be applied to a wide range of grasses such as Kentucky bluegrass, perennial ryegrass, tall fescue, Bermuda grass, Zoysia, St. Augustine, buffalo grass, and centipede grass.