How do we improve on bean production
Our butterbean bushes have lots of blooms and produces and a lot of little pods, and of the pods produced, not many fill out to maturity.
Certified GKH Gardening Expert
It sounds like you may have nitrogen heavy soil. 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
Try adding some phosphorus to the soil. Bone meal is a good source of this. Here is more information: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm