i dont think that this is a very good idea. as far as i know, they ll take up a lot of nutrients from the soil. so i would not put them all in one place.
what about mixing with plants which do not take up much nutrients (greens?) or with plants which accumulate nitrogen and/or minerals? and having some good chop and drop plants nearby, but not too close?
last year i had two rows of potatoes next to each other. this year i ll try to spread them into several places ... i ll see how that works out
i d like to try sweet potatoes, but they wont grow very big in our climate. sunchokes go very well. i think, they re best for areas which one does not plan to use otherwise. they re good to plant and then leave them alone. i remember feeding them to
rabbits.
would sunchokes be strong
enough to grow runner beans up them?