In most cases, sweet potatoes won't rot or become spoiled, but their taste will change over time. You won't enjoy eating shriveled or mushy veggies that have turned brown or black. However, once mold develops, and tubers go bad, they will become highly poisonous.
Can you eat sweet potatoes that are green?
Answer: No, according to Bob Sherman, University of California Farm Adviser for Merced County. The green color is oxidation and should not affect either the quality or flavor of the sweet potatoes. Sherman also reports that the Garnet variety of sweet potato sometimes has a dark streak in the center.
When should you not eat sweet potatoes?
As sweet potatoes begin to spoil, they will shrivel (like the one on the photo above) as they lose moisture. The veggie will then become mushy and turn brown or black. Do not eat sweet potatoes once they have begun to shrivel, and certainly not past this point.
Can you get sick from old sweet potatoes?
In addition, rotten sweet potatoes with mold can consist of dangerous bacteria, resulting in food poisoning. Therefore, be careful with your bad sweet potatoes and throw them away to protect your health.
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