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Zucchini Vine Borers: Identification and Organic Control

Mushy fruit with holes + worms inside hollow stems = squash vine borer larvae. Overhead watering worsened it. Prevent next year: diatomaceous earth mixed in soil and dusted on plants. Safe for birds/mammals.

Prevention Routine

Amend soil with DE at planting.
Dust plants weekly.
Row covers until flowering.
Foil wrap stems at bloom.

DE is broad-spectrum for soft-bodied pests.

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