Answer: I'm afraid I'm stumped. If you used potting soil in your containers I can only guess that the cold, hot weather and the rain has made the soil settle and perhaps floated up some of the ingredients in the potting soil. If you used garden soil in your containers, there may be earthworms surfacing for air. Or, the soil in your containers has attracted burrowing insects. I'd just wait and watch. There may never be any damage to your plants at all. I hope this is the case!
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