I had an idea yesterday that I want to 'bounce' off of this group...

We have lots of fences and I dropped echinacea seed all along the outside of the fence on one side because it is a) pretty (purple cone flowers) and b) useful. But, as I was doing it, it occurred to me that I can plant climbing beans (probably black) all along my many fence rows and just let them grow until harvest time. Guessing the cows will generally leave them alone in most places, particularly if the beans simply outpace them in growth. And, multiple fences have no ruminants next to them...

Thoughts?

I'm just pondering how to plant a large bean crop without using up massive garden space. As a climber. once the beans are up a foot or two, weeds/grass along bottom won't matter.