Answer: You can hand pollinate if there is little or no insect activity, but the usual problem this early in the season is that squash plants are producing only male flowers. In a few days/weeks the plants will also produce female flowers and natural pollination will take place. Female flowers have a swelling on the stem directly behind the petals; male flowers have a straight stem. If you want to hand pollinate, take male flowers and brush the insides of female flowers so all the flower parts touch. This should result in complete pollination and a little baby squash.
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