If you’ve ever reached into your pantry only to find your potatoes covered in unsightly sprouts, you’re not alone. But thanks to new research, there’s a surprisingly simple trick—rooted in science—that could keep your spuds fresher for longer.
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Why storage matters more than you think
Potatoes are kitchen heroes. They’re affordable, versatile, and comforting in every form—from golden fries to creamy gratins. But one of the most frustrating things about them is how quickly they can start to sprout when stored improperly.
I learned this the hard way. During a snowy week a few winters ago, I stocked up on a big bag of potatoes, thinking I was being smart. I left them in a warm kitchen drawer… and just two weeks later, they were soft, sprouting, and not-so-appetizing. Since then, I’ve discovered that light and heat are the real culprits.
Experts recommend keeping potatoes in a cool, dark, and well-ventilated space—think a basement, pantry, or even a shaded cupboard. According to the United States Department of Agriculture (USDA), this helps prevent both sprouting and rotting.
The unexpected role of ethylene gas
Here’s where it gets interesting. Scientists have found that a naturally occurring gas—ethylene—can actually help delay sprouting. While that might sound counterintuitive (since ethylene is also what ripens fruit), controlled exposure has been shown to have a positive effect on stored potatoes.
Research published in the Journal of Food Science and Technology tested this by treating stored potatoes with ethylene at specific intervals. The result? These spuds stayed firmer, kept their sugar and starch levels stable, and sprouted much later than untreated ones.
So, how do you take advantage of this at home? You don’t need fancy lab equipment. Just try placing a few ethylene-releasing fruits like apples near your potato stash. But here’s the catch: too much ethylene in the wrong environment can harm other fruits or even speed up spoilage, so don’t overdo it.
The American Potato Council advises balancing storage carefully if you’re using this method—especially in mixed produce areas.
Practical tips to keep your spuds sprout-free
A few small changes to how you store potatoes can dramatically increase their shelf life. Here’s what works:
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Pick the right location: Store potatoes somewhere cool, dark, and away from direct light. Avoid anywhere with lots of moisture or heat—like near ovens or under sinks.
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Let them breathe: Forget plastic bags. Instead, use mesh bags, open baskets, or paper sacks with small holes. Potatoes need airflow to stay dry and firm.
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Keep them away from onions: Onions may be great in the same dish, but not in the same drawer. They emit gases that accelerate sprouting and spoilage, so store them separately.
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Check regularly: Damaged or soft potatoes spoil faster and can affect others nearby. Do a quick weekly check and remove any bad ones before they spread their misery.
Real people, real results
Emma, a home cook in Oregon, shared her success after trying the apple trick. “I tossed a couple of apples into the basket where I keep my potatoes, and honestly, I was shocked. Weeks went by with zero sprouting,” she said. “It’s such a small change, but now I never skip it.”
John, a backyard gardener from upstate New York, takes a similar approach with his harvest. “I store my potatoes in the cellar, keep airflow going, and I’ve started using fruit nearby for ethylene. I used to lose a lot of my crop by January—now they’re still going strong in March.”
Backed by science and expert advice
These aren’t just anecdotes—there’s solid science behind these methods. Research institutions like UC Davis have studied potato storage in detail, confirming the role of temperature, airflow, and ethylene gas in preserving freshness. Meanwhile, the USDA and American Potato Council continue to emphasize the importance of proper storage techniques to reduce food waste and maintain quality.
Final thoughts
You don’t need to be a food scientist to keep your potatoes in top shape. With a little knowledge—and maybe a few apples—you can dramatically reduce sprouting and make sure your favorite tubers are always ready for whatever’s on the menu.
So next time you’re hauling home a sack of spuds, skip the countertop and give them the storage they deserve. After all, a little science can go a long way in the kitchen.
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