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Zucchini Flowering but Not Fruiting: Pollination Solutions

Normal Flowering Sequence

Zucchini produces male flowers first (1–2 weeks), then females. If only males appear after 3+ weeks, pollination is the issue.

Pollination Fixes

  • Hand-pollinate: Dawn is best. Brush pollen from male to female (swollen base).
  • Attract bees: Plant borage, catmint, sunflowers, cosmos nearby.
  • Avoid pesticides during bloom.
  • Check for females: Tiny fruit at flower base = female.

Other Factors

  • Extreme heat (>90°F) sterilizes pollen.
  • High humidity makes pollen sticky/ineffective.
  • Over-fertilization with nitrogen delays female flowers.

Quick Test

If hand-pollination yields fruit, bees are the bottleneck. If not, check for cultural issues (water, nutrients, disease).

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