Question: are sweet potatoes high in potassium?
Answer: Sweet potatoes, another starchy tuber, are also a respectable source of potassium. A large sweet potato (6.3 ounces or 180 grams) provides 18% of the RDI (9). Yet potatoes and sweet potatoes are not just good sources of potassium. They are also high in vitamin C, vitamin B6 and manganese.