Prodiamine 4L Pre-Emergent Herbicide by Quali-Pro is your season-long solution for preventing weed and grass emergence in established turfgrasses, ornamentals, nurseries, and more. With a 40.8% Prodiamine active ingredient, this liquid flowable herbicide delivers reliable pre-emergent control of annual bluegrass (Poa annua), crabgrass, goosegrass, chickweed, knotweed, spurge, and other common broadleaf and grassy weeds.
Prodiamine 4L is ideal for use on lawns, landscape beds, sod farms, Christmas tree farms, and around ornamentals—excluding golf course putting greens. Its low use rates, long-lasting effectiveness, and non-staining formulation make it a go-to for professionals seeking consistent performance.
