Beans

Unless we can see the whole plant to confirm, I'm going to say NOT beans.....at least not edible beans, Phaseolus vulgaris. The leaves are not at all the right shape or size for those. But there are scores of leguminous weeds that produce bean-like seed pods.

when planting, I added special soil for trees and shrubs. The original area I dig up has a lot of clay

I just ripped it out.

It is something in the Apocynacea family, likely a tropical and possibly a Mandevilla. Which makes it not a bean, potentially poisonous and an ornamental vine.