Zucchini Not Flowering? Sun, Water, Fertilizer & Pollinators Checklist

First-time gardener: 6 zucchini plants, only 3 flowered, flowers withered, no fruit, no new flowers. Troubleshooting checklist:

1. Sun: Need 6+ hours direct sun including noon.
2. Water: Deep soak every 3–4 days + liquid fertilizer after soaking. Never fertilize dry plants.
3. Pollinators: Bees essential. Plant flowers nearby (sunflowers, marigolds). Hand-pollinate with brush if bees scarce.
4. Male-only flowers: Some plants produce only male flowers (stamens only) temporarily. Brush all flowers anyway.
5. Cool/rainy weather: Bees don't fly—hand-pollinate.

Address these, and flowers (then fruit) should follow.