All posts copyright their original authors. Sep 14 # 3 of 4. Sweet potato virus disease is a disease complex caused by two viruses; sweet potato chlorotic stunt virus (SPCSV) and sweet potato feathery mottle virus (SPFMV). How To Grow Sweet potato vines like heat and sun. these spots weren't there when i put them in the oven. Comments (2) aulani. Ask MetaFilter is a question and answer site that covers nearly any question on earth, where members help each other solve problems. Relevance. Cold makes them hard inside and may alter the taste a bit. As lesions expand, they can girdle ste… Last but not least, if you notice that there is anything wrong with the sweet potato that wasn’t described above, get rid of it. The mold can give an unpleasant flavor to the rest of … Hot temperature causes tiny holes inside the sweet potatoes to form. Do not eat sweet potatoes once they have begun to shrivel, and certainly not past this point. vegetablemdonline.ppath.cornell.edu/factsheets/Potato_BlkDot.htm I made a curry today using two large sweet potatoes that both had little bits of whitish/greyish mold growing at the very tips. It is confirmed that SPCSV enhances the accumulation of SPFMV. Do you use or toss moldy food items? If there are only small amounts of it, you can cook tubers after peeling them carefully. Better safe than sorry. Ask MetaFilter is where thousands of life's little questions are answered. Nevertheless, for quality reasons, I suggest using these within a day or two. Wouldn't consider this at all a problem after the knife cut the mold off. This is the first year I've grown sweet potatoes in this sandy, humus rich soil. You are not logged in, either login or create an account to post comments. I'm baking sweet potatoes and i went to flip them and some of them had spots that almost looked like mold. When it comes to cut sweet potatoes, they probably can last even a week or so in the fridge if stored properly. Similarly, small brown or black spots on your sweet potato do not necessarily indicate that it has spoiled. As sweet potatoes begin to spoil, they will shrivel (like the one on the photo above) as they lose moisture. If I moved my finger across the spots, they absorbed back into the sweet potato . Any mold is suspicious. The symptoms are sever stunting of infected plants, stunting, distorted and chlorotic mottle or vein clearing of the leaves. If there is an extensive amount of Fusarium, this can give the potatoes an off flavor. How to remove moldy smell - without washing? Sweet potato, mold spots when baking? Ya good! The symptoms caused by SPCSV alone is negligible. Close • Posted by 21 minutes ago. When it comes to pithy sweet potatoes, as long as the inside of the potato has only a few holes here and there, it should be perfectly safe to eat. If a roadside stand or farmers' market is not on your route (or in season), McGreger's go-to tip for the grocery store is to choose sweet potatoes without any soft spots and with well-formed skins. Plants in containers should be goosed with liquid fertilizer every two weeks. I was peeling some the other day and some … I thought potatoes … Fortunately enough, we got you covered. Favorite Answer. And of course, everyone forgets about that bag soon enough. I know I must appear frightened by sweet potatoes but this really freaked me out: I cut into this sweet potato and a few seconds later, these crazy white spots appeared. That begs the question like “do sweet potatoes go bad?”, or “how long do sweet potatoes last?”. Is there hope. It’s easy to buy that five-pound bag of sweet potatoes, and then realize that it’s going to take far more than a few meals to go through them all. After you have cooked the sweet potatoes, you should store them in the refrigerator. Cercospora leaf spot Cercospora spp. Mold spots also mean spoilage, but like with all other veggies, if the spots are small, you can just cut them off with some excess and use the rest. Sweet potatoes (Ipomoea batatas) provide ornamental beauty and edible root tubers, depending on the variety. Old sweet potatoes tend to develop holes Similarly, small brown or black spots on your sweet potato do not necessarily indicate that it has spoiled. The spots are not indented, rotting or scaly. Sweet potatoes and crowns left in the field after harvest may provide a haven for the weevil in winter, especially when sweet potatoes are covered by soil. This year, there was an incident that caused me to go and search for information and I’d like to share: among the latest sweet potatoes I collected were ones cut from a tractor plowing (to seed the fields with winter wheat) and some of the sweet potatoes had black mold on cut ends. It is not a sign of spoilage, and the sweet potato still edible at this point. Plus they are already cooked, so you can defrost and reheat them, and they’re ready to go. Anonymous . This wouldn't even register on my radar of things to be concerned about with food. If the temperature is lower than room temperature, they can last even up to a month. Thanks! The same thing goes for baked sweet potatoes – they have to be refrigerated. When it comes to defrosting and reheating frozen sweet potatoes, there are a few options: Fresh raw sweet potatoes last about two weeks in the pantry. These spots do not indicate spoilage, and you can simply remove them before cooking. I think of myself as being pretty food risk-averse, and I'd have eaten it. Blue mold rot Penicillium spp. If you are interested in any of these topics, read on. Could this have been caused by the deer because the tops of the plants were eaten? The potatoes are still safe to eat, just cut the spots away. The clay pot also seems to have mold or something? These become quickly covered with a white cottony growth that can spread rapidly to nearby stems and leaves if moisture is present for several hours. Hose plants regularly to knock mites off of leaves, being sure to spray the undersides of leaves. Spoiled sweet potatoes have soft, spongy spots. Usually, the bad spot will separate on its own. Give them moist, fertile, well-drained soil. Black rot, caused by Ceratocystis fimbriata, not only causes rotting but gives the sweet potatoes a bitter flavor. If a potato has just a few small green spots, you can cut them out or peel the potato. White Fuzzy Stuff On Potatoes - Cooking Talk - Cooking Forum - Spice Place ... and/or a black spot in the center. Lesions usually first appear in the intersections between the stem and branches, or on branches and stems in contact with the soil (Photo 2). You can remove the spots, and cook and enjoy the rest of the sweet potato. These spots are called internal black spot and are essentially bruising that occurs from the potatoes lying against each other for an extended period of time. White mold symptoms first appear as water-soaked lesions 14 to 20 days following row closure, depending on the cultivar and cultural practices (see white arrows on Photo 1). They lived in a bag together for two months. As soon as you spot sizable white or green mold over your sweet potatoes, throw them away immediately. The exception is mold spots; if a sweet potato has begun to mold, throw it away. Mold may appear as fuzz or a few dark spots that are brown, black, red, white, or bluish gray. Sometimes it's because the potato was damaged in harvesting or storage, allowing mold spores or bacteria to enter. The moldy looking spots are a more serious condition that can develop from the bruises, called fusarium. One has a lot of mold, one has a little, one seems to have none. Having lost moisture, they’re apt to rot. Definitely toss them... My airhead brother cooked some that looked like that once, and he ended up with one doozy of a stomachache for the rest of the night. Cure the sweet potatoes before storing them and store the roots at 55-60 F. (13-16 C.). If the rest of it is not soft or gross, I wouldn’t give it a second thought. Black rot – Other diseases may result in sweet potatoes rotting after a harvest. You can remove the spots, and cook and enjoy the rest of the sweet potato. While you can freeze raw sweet potatoes, you get better results by freezing cooked ones. I have done this over a hundred times, I'm sure (I eat a lot of sweet potatoes), and I'm totally fine! If you're going to be holding them for a couple days, then drop them … It looks almost like mildew. Phaeoisariopsis bataticola = Cercospora bataticola, C. batatas, C. ipomoeae. I’ve done this before and I’m still here to talk about it! After cutting the potatoes transfer them into an airtight container filled with water and put into the veggie drawer in your fridge. I cut off an inch or more of potato past the mold zone and proceeded to cook, because I really wanted those damn sweet potatoes and the grocery store is scary these days. You should store fresh raw sweet potatoes in a cool and dark place, preferably in the pantry. Some people call such potatoes spongy, but the proper term to use is pithy. Also, why, cruel world. I have done this and then fed said sweet potato to my baby. Precisely the same rules apply to prepared dishes with sweet potatoes like casseroles. But other than those cases, you usually have the all-clear. Store Your Potatoes Inspect all the potatoes for soft spots, sprouts, mold, shovel damage, and pest damage. The sweet spot for storing sweet potatoes is a few degrees below room temperature. By Brierley Wright, M.S., R.D. Here’s one of the methods of freezing sweet potatoes: While sweet potatoes can be frozen indefinitely, it’s best to eat them within a month due to quality reasons. Thank you all for your words of potato reassurance! Now I'm googling and seeing all sorts of things about hepatoxicity from the kind of mold that grows on sweet potatoes. are they safe to eat? Is it worth it to open the bag? When it comes to mold spots, if there is a small patch of mold on the potato, it doesn’t mean the vegetable’s time is up. 0 comments. can i cut those sections off and eat the rest? 1 decade ago. They'll grow in light shade, but their colors will be duller. If you want to cut your sweet potatoes beforehand so they are ready to be cooked once you’re back from work, you can do that. … As long as the area with the moldy spot is easy to cut off and takes up only a small portion of the potato, the food is still salvageable. Like all root vegetables, sweet potatoes will spoil after a period of time. If you notice sprouts on your sweet potato, just cut off the growths and cook as soon as possible. Brierley's interest in nutrition and food come together in her position as nutrition editor at EatingWell. Okay, I get it: Baking a sweet potato in the oven can take 45 minutes to an hour, or a mere 5 minutes in the microwave. They're winter hardy as far north as USDA Zone 8. If the holes are all over the place, throw it away to be safe. I cut another wedge off and the same thing happened. The clay pot also seems to have mold or something? Store your potatoes in a cool, humid, and dark place (45 to 50 degrees Fahrenheit is the ideal temperature range). A rule of thumb with mould: if it's a hard thing, you should be ok but if the thing is soft (like yogurt or ricotta) there could be mould tendrils that you can't see, so bin all of it. However, in accordance with a resolution adopted in 1989 by the National Sweetpotato Collaborators Group, sweetpotato is spelled as one word elsewhere in this document. Email Save Comment 2. Select sweet potatoes that are dry, smooth, firm, and heavy in the hand. Similarly, small brown or black spots on your sweet potato do not necessarily indicate that it has spoiled. If it helps, I never peel my sweet potatoes and I'm pretty careless so I've accidentally missed and eaten small moldy spots a few times, and have never been harmed aside from an awful taste. And try to do surgery on the one least-moldy Potato? White spots on sweet potato leaves can be the result of the feeding activities of spider mites. Here are four moldy foods you can eat (but if it’s completely covered with mold, throw it away) and foods you should toss if they're moldy: Moldy Foods You Can Eat (And Which To Toss) See Gallery. Alternatively, you can wrap the vegetables in kitchen paper or aluminum foil, and then transfer into the fridge. In most cases, surface mold doesn’t impact the internal parts. Unlike other causes of white spots in sweet potatoes, mites are easy to control. However, cantalope that has mold may be over ripe already, and cantaloupes can have some nasty bacteria on their skins, so a good scrubbing before cutting would be good. Dirty sweet potatoes = good sweet potatoes.) One may also ask, do sweet potatoes discolor after peeling? 1 Answer. And if a potato has become noticeably shrunken, mushy, wrinkled, has severe greening, or has developed long sprouts, those are telltale signs to toss it. Growths from the “eyes” of the sweet potato are the first sign that the quality is beginning to deteriorate. Additionally, if you ever spot mold on cooked potatoes, you should dispose of them immediately. Sweet potatoes don’t do well in either cold or hot temperatures. So even if you had actually eaten any, I don't think the mold is necessarily toxic to the degree that you're thinking (though I still do not recommend eating the moldy parts). In this article, we go through storage methods, shelf life, signs of spoilage and even freezing sweet potatoes. If you miss these damaged areas before cooking, cut them out as soon as the sweet potatoes are cool enough to handle. Or bury the whole family as they are, together in life and death. They might have turned dark brown or black. I would toss them! Unlike russet potatoes, sweet potatoes (especially garnet yams) do not turn brown or lose texture on exposure to air. The veggie will then become mushy and turn brown or black. What are these spots on my sweet potato vine? 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