To get the best results with a weed and feed fertilizer, you want to put the product down when the weeds are actively growing. When the chemical is absorbed into the leaves, it is the most effective.
Mow your lawn a day or two before application. Use a hose and spray the entire lawn before you put down the weed control. You want the weeds wet so the weed control is absorbed into the leaves. You don't want to have rain in the forecast for at least 24 hours.
