Why do I have lovely butter bean vines but no butter beans? I had the same problem last year.
Certified GKH Gardening Expert
All beans are nitrogen fixing plants so be careful to avoid heavy nitrogen feedings, as nitrogen-rich soils result in excessive vine growth and little to no beans. This article should also help: https://www.gardeningknowhow.com/edible/vegetables/beans/bean-blossoms-no-pods.htm