Melons cultivated under glass must be artificially pollinated, which is also recommended for the free-range melons.
Melons have separate-sex flowers and are monoecious. This means, male and female flowers can be found on each plant. When fruits are supposed to develop, must the pollen (Pollen) move from a male to a female flower. The bees are usually responsible for transferring the pollen. Who wants to be sure, but shouldn't rely on these insects, but pollinate yourself. The easiest way to transfer the pollen, when you pluck a male flower and match its dust container with the stigma of a female flower. To be on the safe side, this work is repeated on a few days. The best time to pollinate is at noon when the sun is shining.