pole lima bean fruit setting problem

Question

I live in northern Delaware. What is causing my pole lima beans to not set fruit? I have 2 rows 40′ long and 5′ between rows and 3′ between plants trellised to 6′. The vines are thriving but I see very few pods. Around 99.9% of the flower stalks are without fruit. The only pests I’ve seen are a few green stink bugs. I’m not having problems with fruit production on my tomatoes, peppers, sun flowers, or adjacent row of string beans. HELP!!

Answer 1

This article might help: https://www.gardeningknowhow.com/edible/vegetables/beans/bean-blossoms-no-pods.htm