Question: I’m growing the recommended varieties of tomatoes, but even they aren’t setting fruit. What gives?
Answer: Assuming they’re in full sunlight and are producing flowers, then they probably aren’t getting pollinated. Tomato flowers are self-pollinating, and it’s the action of the wind that vibrates the pollen loose within the flowers. If you’re growing your tomatoes in a sheltered area, and if they’re not exposed to much wind motion, you may have to thump the flower clusters with your finger every couple of days to ensure good pollination. Try it. It really can help.