Do you mean ones that you grow yourself, or ones that you buy from the store. I have definitely noticed that they spoil quicker from the store. As a kid My family would buy them in droves on sale and keep for what seemed forever if cool and dark. But now I’ve had potatoes go bad, even in the fridge withing weeks. They turned to a sludgy, soupy moldy mess. I’m not sure why, but the reds seem to last a little longer for me, and IIRC these last ones I washed before storing and they’re growing eyes, but after 6 months or so are still ok (As far as I know, ha!)
I know some roots like onions/garlic (at least I’ve heard) are sprayed with an anti-sprouting spray. Maybe that’s why washing helps. It’s supposed to keep them asthetically better, I dunno if it is a factor or not. Like I said, I’ve noticed the store bought taters going bad quickly, haven’t grown any myself this year, but the ones with eyes are going into the ground this year, in my first adult attempt to grow em. Any advice is welcome!
I grow Yukon Gold that are naturally notorious for rotting faster than others. But, I just love fresh green beans, ham and potatoes! You cannot beat new potatoes!
We used to grow large crops of Kenebec potatoes. But I like Russert now. But They all don’t keep like they used to.