Can You Tell Why The Flowers On My Runner Beans Keep Dropping Off

Question

I used to have fantastic runner beans but about 4 years ago the flowers started dropping off sure it’s not birds or insects. Any ideas and suggestions to stop it.

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Answer 1

Beans, naturally, increase nitrogen in the soil. If crops are not rotated, then it may be necessary to provide some phosphorus and potassium. This can offset the nitrogen, and raise the pH a little making nitrogen less available to the plant.

Here is more information on the bean:

https://www.gardeningknowhow.com/ornamental/vines/scarlet-runner-bean/growing-scarlet-runner-beans.htm