Don from Sherwood, Or writes
Casoron 4G is a selective pre-emergent herbicide that will prevent the germination of listed weeds on the product label and should provide season long residual in a single application. Pre emergents do not kill actively growing weeds, only prevents them from germination, Pre emergents must be applied in early spring or late fall prior to soil temperatures reaching 55 degrees in order to stop the germination of weeds and prevent the weeds from emerging from the soil. For specific timing recommendations in your region and for the specific weeds you are targeting, please contact your County Extension Office for recommendations. prevent listed weeds from germinatig in the soils many variety of weeds and grasses.
Answer last updated on: 07/12/2022
