Last year most of my blossoms fell off and very low yield, what is the problem? Someone told me to keep the blossoms misted with water, is that so?
Growing Pole Limas
Certified GKH Gardening Expert
Misting wouldn't really make a difference other than for the purpose of humidity, which shouldn't be a factor. Blossom drop is usually caused by stress. Too much water or too little will upset the plants natural rhythm. High temperatures can also cause problems. It could also be due to a lack of pollination (in which you can add bright colored flowers nearby to attract bees).
In rare cases, a boron deficiency will cause flowers and pods either not to form or they abort. Boron deficiency is corrected by application of soluble boron salts. You can have the soil tested to determine if this is an issue. Here is an article that you may find helpful: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/boron-on-plants.htm