The lima bean is a green or light green flat bean. It is used only for the seed, the pods being coarse or woody. There are two varieties, a climbing or pole variety and a dwarf or bush variety, which is used in commercial canning. The pods are wide, flat, and slightly curved. The lima bean itself is readily distinguished by the characteristic fine ridges in the seed coat that radiate from the “eye.” The plant grows as a perennial in the tropics and is normally cultivated as an annual elsewhere.