Brian from Greenville, Sc writes
Hi-Yield Weed and Grass Stopper with Dimension Herbicide can be used in the fall and/or in the spring, it all depends on what you are targeting, different weeds germinate at different times of the year so when you use it is based on that and your target weeds. Under the Application Timing Section of the product label, there is information for both Spring and Fall applications. Spring Applications will target spring/summer weeds such as crabgrass, nutsedge, etc and should be applied when soil temps are just under 55 degrees. Fall applications will target winter weeds such as clover, chickweed, poa annua(annual bluegrass) and should be applied once soil temps fall below 70 degrees and continue to drop. Please view our Lawn Care Guides to view helpful information on common weeds and our Warm Season and Cool Season Lawn Care Schedule for general timing recommendations based on turfgrass type. For the most accurate timing in your area, contact the Master Gardener with your County Extension Office as they can provide the best recommendation on when to apply spring and fall pre emergents.
Answer last updated on: 08/28/2021
