Still OK to Eat. Just cut the unsightly part away from the skin and/or flesh and cook as you normally would. If you’ve ever grown an Alberta spud, you’ve probably encountered potato scab. The incidence of potato scab can be reduced by selecting and planting certified, disease-free potatoes in spring. You’ll notice tan to dark brown, rough textured lesions where smooth flesh is supposed to be. This clot covers the wound and keeps it dry. Rough or Scabby Tubers. As common as a cold, scab is a bacterial infection that results in nasty scabs across the potato. The scab marks will not appear to be cork like, and will usually have a thin flap of skin around the outside of the scab. Thin-skinned potato varieties tend to be more severely affected. Is it safe to eat blight-affected potatoes? Eating potatoes with scab I just bough in some potatoes that have potato scab. They had a common potato disease called potato scab. Powdery scab. The warm, wet summer was disastrous for potatoes in Hampshire and virtually every allotment on our site was hit by blight in July. Sometimes just a few but in a bad case they cover the the skin. The scabs or galls are raised crater-like patches on the skin of the tuber with rough edges. I left the Picasso spuds in the ground for a couple of weeks before digging up and bagging and I've been watching them like a hawk since then for signs of rot. Find out the causes, risks, and treatments for eating scabs. As a result the quality of the potato has been diminished. Is it ok to use them for jacket potatoes or should they be used only peeled? Also rotate the placement of potatoes in the garden. This disease can also affect other root vegetables such as beets, carrots, parsnip, radish, rutabaga, salsify and turnip. Rough, corky patches on the surface of potato tubers is due to potato scab. Photo credit: Purdue University. A scab is created when 16 chemicals work together to form a blood clot. Potato scab is a common and disfiguring disease of potato tubers that affects potatoes wherever they are grown. The flesh though is rarely affected and, after peeling, the potato … Nearly all people will pick at a pimple or scab on their skin periodically. Simple techniques to prevent your potatoes from developing scab I've often eaten lightly scabbed potatoes, including skins. Treacodactyl: How bad are they? The good news is they’re ok to eat and still delicious. The good news about potato scab is that it usually looks worse than it actually is. Picking scabs is not the best idea you can make. Common potato scab occurs throughout the potato growing areas of the world. While potatoes that have been frozen are safe to eat the cell structure of the potatoes will have been damaged. Choose cultivars, such as ‘Superior’ and ‘Red Norland,’ that possess good resistance to potato scab. 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