how long are potatoes good for
Best Answer: Potatoes stay good for quite a long time compared to all other veggies. Potatoes are actually bulbs, if panted in the ground and watered they will start to grow again. (fun science for elementary students) They will keep good for a while(3weeks-5weeks) in a dark, cool, dry place. was wondering how long they actually stay good for, and what are... show more When I was younger my mom used to buy the big bag of potatoes, and they used to stay under the cabinet for quite some time, and sometimes they would get these little buds on them.