Perennial Herb: Produces sweet-tasting tuberous roots with gold or dark purple skin. The tubers start to form when days are getting shorter & they can be dug up from November onwards. Eaten boiled, baked, fried, or dried, Oca is used as a potato alternative w/superb nutritious values. Large shamrock shaped lvs & the flowers can be added to salads. Blm color: yellow. Ht: 2'. Exp: sun/pt. shade. Protect against early frost.