Answer: Your plants are showing stress due to root suffocation (lack of oxygen in the soil). How long they were flooded will make a difference in their recovery rate. I'd give them another week or 10 days to recover. If they still look wilty then you can cut them back. Plants can be quite resilient so give them a chance to recover on their own. You might be surprised. If not, you can always prune them back. Best wishes with your landscape!
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