How long does barricade pre emergent last?
People also ask, how long does a pre emergent last?
Every product is a bit different. Typically, you can expect one treatment to last 3-5 months. However, Canopy recommends applying a split application approximately one month apart to maximize effectiveness.
Also question is, how soon can I overseed after pre emergent?
Sta-Green Crab Grass Preventer specifies that the product can be effective up to 4 months, and recommends that you wait at least 12 weeks after application before reseeding.
The best time to apply is the when the daytime highs drop to the mid-70s for about three to five days in a row. Since a pre-emergent application will not last through the following summer, make a pre-emergent application late spring or early summer (see Spring Herbicide Applicaiton map).