Check the listing for details. Monterey Vegetable/ Ornamental Weeder Pre-Emergent Weed Killer Herbicide, 32 oz. Condition: New. Listed at 51.56 USD. Monterey Vegetable/ Ornamental Weeder Pre-Emergent Weed Killer Herbicide, 32 oz PRODUCT DESCRIPTION This vegetable and ornamental weeder is designed for the control of annual grasses and broadleaf weeds in ornamental trees, Ornamental woody shrubs, Ornamental groundcovers, roses, established flowers, and vegetable gardens. Key Product Features Controls weeds by killing Their seeds as they germinate, so it helps to prevent weeds from establishing. Apply vegetable and ornamental weed Killer to the soil surface, and then water in. This is one of the few weed killers that can be used in vegetable gardens.Once applied, this herbicide can help control and protect your garden from weeds for up to 5 months. This product is a great weed and grass preventer for combatting weeds before they are even visible. There are a lot of different broadleaf weeds and grasses that this product controls. This includes crabgrass, knotweed, chickweed, and more. Soon, the weeds will be gone from your garden before they appear. However, it does not control established weeds.