Hand Pollination of Courgettes.
If you have a variety of courgette you are particualrly fond of, why not save some seeds for planting next season? You can't just take the seeds from a mature courgette because there is no telling what its cross-pollinated with and you may get a surprise when the new courgettes begin to grow. However, if you intervene early enough you can ensure a pure variety by hand-pollinating the female courgette flowers.
The following gallery gives a simple introduction to the hand pollination of courgettes which can also be used on marrows, pumpkins and other squash.

