I have planted ford hooks and they have plenty of blooms but have very few beans. The other beans that I plant (colored and white beans) always do good. My peas do good. It's only the ford hooks that will not produce. I plant the ford hooks at the same time as everything else. And they get the same amount of water and fertilizer as everything else.
Certified GKH Gardening Expert
This article should help: https://www.gardeningknowhow.com/edible/vegetables/beans/bean-blossoms-no-pods.htm