Answer: It doesn't sound as though the flowers on your vines are being pollinated. This can be due to cold, windy weather (insects aren't as active when it's cold). To encourge bees and wasps to visit your garden, don't use insecticides, and try to have lots of other flowers in bloom around your garden. You can try to hand pollinate your Jack Be Little's by removing a male blossom and 'visiting' each of the female blossoms on the vine. Female blossoms will have a swelling on the stem directly behind the blossom. Male blossoms don't have the same swelling so the stem will be the same diameter from end of blossom to vine. Just brush the inside parts of the male blossom to the inside parts of the female blossoms. In the meantime, try to figure out why there's so little insect activity in your garden and make adjustments if possible.
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