Mike from Sunbury Ohio writes
Thank you.
While Certainty Herbicide - 1.25 oz. cannot be applied to cool season lawns SedgeHammer + Herbicide provides selective post-emergent control of purple nutsedge, and can safely be applied to well established cool season turf grass types such as Kentucky Bluegrass, tall and fine fescue, and perennial ryegrass. Sedgehammer + is considered one of the more "gentle to turfgrass", if used as directed on the manufacturer's product label.
Answer last updated on: 06/21/2022