Different plants from the pumpkin family, i.e. the melon, the zucchini and many field cucumbers, form both male and female flowers on one plant. In order for fruit to emerge, not only is flowering necessary, but also one pollination of the blossoms is important.
Insects are responsible for the transmission of this pollen. And they are not avid flyers when there is predominantly rainy weather.
If the flowering period is characterized by a lot of rain, it may be possible that ultimately from the beautiful flowers no fruits result. Hobby gardeners can lend a hand themselves to carry out the pollination manually.
Use a brush to transfer pollen
A brush or cotton swab is a helpful tool. Pollination is guaranteed for all hermaphrodite vegetables, such as tomatoes, eggplants or peppers, because only the wind or small shocks pollinate the flowers in the immediate vicinity.
In a greenhouse, on the other hand, there is no weather influence that carries out this pollination and so the hobby gardener has to intervene with the brush to trigger the pollination and to manually pump the pollen onto the flower. It is not uncommon for the pumpkin family to rely on brush pollination.