Tara writes
Prodiamine 65 WDG (Generic Barricade) is a pre-emergent so it will only stop future crabgrass seeds from germinating (timing is key in your area). If you are looking for something to kill existing crabgrass then you will need a post-emergent. Keep in mind that it may be too late to apply for a post due to the tiller stage of the crabgrass. The higher the tiller stage, the more difficult it is to control.
Answer last updated on: 09/07/2022
