Answer: Based on your description, I would suggest a wind break might help. This would reduce the wind-related water stress on these relatively larger-leafed plants and would also provide better conditions for pollination to occur. These plants are pollinated by insects, so you might also make sure that any row covers are removed periodically and that you are not spraying insecticides that would interfere. You might also try using a paintbrush to pollinate. Finally, although these plants are heavy feeders, be careful not to oversupply them with nitrogen as this can contribute to excess foliage growth at the expense of flowers. I hope this helps you troubleshoot the problem.
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