Transition Chesterfield's annual Potato Day will take place an empty shop unit in The Pavements, Chesterfield.
41 varieties of tubers will be on sale alongside onions, shallots and garlic.
Order places by 10th December will cost 12p/tuber. Orders placed after this, or bought on the day, are likely to cost 14p/tuber, although prices will be finalised nearer the time.