Weed Management After the Flood

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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