Yin-yang beans, also called Calypso or orca or black calypso beans (Phaseolus Vulgaris), resemble nothing more than the ancient Asian symbol of “yin-yang,” even to the point (no pun intended) of the eternal black dot. The beans take 70-90 days to produce “fruit.” According to gardening catalogs, these hyrbids grow to be fifteen inches high. … More Yin-Yang Beans