Prodiamine 4L Herbicide - 2.5 Gallon. Prodiamine 4L by Quali-Pro is an excellent pre-emergent herbicide for control of broadleaf and grassy weeds in turfgrasses, lawns, sod farms, ornamentals, and Christmas tree farms. Same active ingredient as Barricade 4FL Lower use rate that other pre-emergents for costs savings and effective control Can adjust application rate to fit your needs, including season long control Slow to break down so that it stays in the germination zone Low-staining formulation Weeds controlled include (but not limited to): Annual Bluegrass (Poa Annua) Chickweed Crabgrass Foxtail Goosegrass Henbit Knotweed Spurge NOT FOR SALE IN WA. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Weed & Pest Control\Weed Control\Herbicides & Fungicides". The seller is "lawnandpestcontrol17" and is located in this country: US.This item can be shipped to United States.