Discussions

If you bought potatoes from the Wheat City Lions club a few weeks back you may want to check them for spoilage. Maybe I got a bad bag but I had washed and dried them because they were extremely dirty, put them into a bin to store. Went to get some yesterday and several were showing signs of rot. Some look good on the outside but have internal spoilage.

Rotting because you washed them.

Some were already spoiling before washing. Do store bought, washed potatoes start to spoil immediately??

When storing potatoes yes look them over for rotting ones as one rotten one can cause others to rot. But by washing you are adding moisture to them causing the possibility to rot. On potato farms they are stored for a year without washing/rotting.  
Its important to store in a cool dark place with airflow such as a burlap sack, cardboard box etc but not in a plastic bag.  
 
Grocery store potatoes are washed really only for cosmetic reasons, like all other grocery produce but really should not be in clear plastic bags exposed to light.