I've never had trouble growing cucumbers before. This year, my cukes have lots of flowers, but I've only had one, half grown cucumber. At least it tasted good. I thought maybe, for some reason, the flowers weren't being pollinated. But, I watched for a while and bees were all over and in the flowers. Also, my squash blossoms, but the flowers never open fully and just wither and fall off. The cukes have nice, fully formed flowers.