Bean, Gold Mine (Wax) Ultra-sweet wax beans. Burpee Exclusive Plants yield early and need no support. One packet has 2 oz. of seed unless noted, and will sow a row of about 20 ft; one pound sows about 160 ft. Our seed is not treated. Very high yields of crisp, ultra-sweet wax beans are borne on compact and unusually upright plants. The beans grow together in clusters that make harvest a snap. Beans are 5-5½" long.