What is the best time to pollinate watermelons?

The best time to pollinate watermelons is on a sunny day. Usually around 5 a.m. the corolla begins to loosen, and around 6 a.m. the pollen is released and the corolla fully opens. From 8 to 10 a.m. is when the physiological activity of the female flower stigma and male flower pollen is at its most vigorous, so this is the best time for hand pollination, and it should be no later than 12 noon at the latest.

After pollinating watermelons, the artificial pollination period for watermelons is usually 7 days, and no more than 10 days at most. If pollination is completed within 7-10 days, the fruit-setting period is concentrated, management is convenient, the harvest period is concentrated, the fruit size is uniform, and the yield is also high. If it exceeds 10 days, fruit setting will be relatively uneven, making management inconvenient, the fruit sizes will be uneven, the harvest period will not be concentrated, and the yield will also be affected.