Sweet potatoes, which are not potatoes but rather related to the morning glory, originated in Central America. A nutritious staple food in many regions of the world, especially Central America, Africa and the American South. They are a long-growing, warm weather plant, easy-to-grow where the climate allows for a 120 day growing season. Sweet potatoes store well for much of the winter in cool, even temperatures and dry conditions. Their abundant, heart-shaped leaves are delicious greens as well, great for sautéing up mid-summer when there aren’t too many leafy greens around. Just harvest a few from each to keep the roots developing. Nutrients: beta carotene (very high), vitamins A, C, E, K, folate, niacin, riboflavin, thiamin, manganese (very high), potassium, magnesium, phosphorous.