Greg from Eastern Nc writes
MSM Turf Herbicide is a post emergent that should be applied once soil temperatures reach above 55 degrees in the Spring/Summer but before dropping below 70 degrees again in the Fall & before the first frost of the season. Here is our lawn schedule to assist you in application timing or you may also consult your local extension office for further assistance with timing.
Answer last updated on: 02/09/2023