Answer: Sounds like Squash Vine Borers have found your garden. They are difficult to control, but you can try planting French Marigolds or Radishes next to the vines to repel the insects, or wrapping soft cloth or old pantyhose around the stem of the vine to keep the adults from laying eggs on the plants. If you find a vine has been attacked, you can slit the tissues, remove the larvae, and bury the cut section in the soil where it will develop roots. Be sure to rotate your crops so any eggs that have remained in the soil cannot hatch and infest your squash plants.
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