Weed Management After the Flood
Immediately after a flood, most farmers, nursery crops producers and grounds maintenance staff have much more urgent matters to worry about than weeds. But, eventually the questions arise:
Has my preemergence herbicide washed away?
How do I know? Should I re-apply? What’s going to happen now?
Unfortunately there is no way to provide definitive answers to these questions. But here are some tips and suggestions that will help you plan a response in a fact sheet: After the Flood — Weed Management Concerns for Nurseries and Landscapes