Jim from Hanover, Pa writes
Q4 Plus Turf Herbicide is highly selective on cool-season turf grasses including ryegrass so it is tolerable. For a selective product recommendation for your turfgrass, please contact us and also provide the turf species that you do have. We can be reached at 866.581.7378 M-F 9-5PM EST.
Answer last updated on: 06/29/2014