Yams are native to Asia and Africa, they are related to lilies and grow as roots of a flowering plant. Yams grow from a regular potato size to gigantic proportions of nearly 5 feet long! Often, the copper-skinned sweet potato is referred to as a yam, or sweet potato yam, and these are a firmer version of swee. potatoes The sweet potato or sweet potato is a dicotyledonous plant that belongs to the bindweed or morning glory family, Convolvulaceae. Its large, starchy, sweet-tasting, tuberous roots are a root vegetable. The young leaves and shoots are sometimes eaten as greens.
 
Shelf Life: about 2-3 months sweet Potatoes last about 3-5 weeks in the pantry and about 2-3 months in the fridge. Keep in mind that the shelf life of sweet potatoes greatly depends on a variety of factors, such as the best by date, the preparation method and how they are stored.