The best way of supporting beans that I've tried is to fix an old bike wheel horizontally on top of a post and then push canes into the ground in a circle round it and tie them to the rim of the wheel. I think my OH fixed a flat piece of wood on the end of the post and fixed the wheel to that by stapling across the spokes. I had 15/16 6 foot canes on each one last year. I should think 4 feet high would be enough for the post, though ours are about 5 feet. It makes a really stable structure. I've tried 2/3 other ways of doing it but this is the only one that hasn't blown down when we've had really windy weather.
Welcome to A4A Little Marvel, I've seen these in action, but do you have a photo for those who haven't?
:)
yes photo please so i can better understand the attaching to the wood part