Ortho Nutsedge Killer for Lawns Ready-To-Spray selectively controls tough weeds like purple and yellow nutsedge (nutgrass). kyllinga. wild onion and garlic. broadleaf plantain. purslane. redroot. pigweed. dandelion. spurge. and other listed annual. biennial. and perennial broadleaf weeds. It can be applied on a great variety of Northern and Southern grass types. This no-mix. ready-to-spray formula will help kill pesky weeds. not your lawn.