A pre-emergent herbicide for the control of grasses and broadleaf weeds in vegetables, trees, shrubs, flowers, roses, rock gardens, and groundcovers. Delivers up to 5 months of control. Apply to the soil surface and water into the soil. This is one of the few weed killers a homeowner can use in the vegetable garden; very economical. Active ingredients Treflan and Trifluralin.