When to Pollinate Zucchini?

Zucchini flowers tend to open up wide in the morning and are often closed by the afternoon, so it is important to hand pollinate in the morning. Pluck a fully open male flower from the plant. Peel off the petals to expose the pollen-heavy anther. Gently brush the pollen over the stigma of a fully opened female flower.

How do I know if my zucchini is pollinated?

Early signs look like the closed blossom might not have been pollinated, as the blossom end is beginning to turn yellow. On some squash plants, particularly summer squash like zucchinis, a fruit that was not pollinated completely will be obvious.

Why do my zucchini plants have flowers but no fruit?

If your local area is deficient in bees, this could be the reason your zucchini plant doesn't produce any fruit. Hot weather can also cause pollination failure. High temperatures reduce pollen germination, resulting in incomplete pollination of the female flowers and misshapen fruit.