Dirigo from Springfield, Va writes
You could mix a post-emergent herbicide or different pre-emergent herbicide with Prodiamine 65 WDG as long as the use sites are compatible, you are not using the same active ingredient in multiple products, and you calibrate the products to be used together. Any time you are mixing products together for the first time, it is recommended to perform a small test mixture first to ensure compatibility in a small jar to be sure they stay in suspension. Keep in mind that post-emergent control (killing existing weeds) will be most effective when the weeds are young and actively growing.
Answer last updated on: 03/10/2020
