Look for these fall fruits and vegetables at farmers markets and in produce departments for the best flavor (and greatest value) in season. Specific crops and harvest dates of fall produce will depend, of course, on your region's climate. See these state-specific seasonality guides for more details.
If I remember right Walmart has a 30 day return policy with a receipt. Without a receipt the only thing they will do is exchange it for the exact same thing. If you have the receipt you should be able to get if fixed by the manufacturer, but sometimes they only have a 90 day warranty.
I service them. You would need to convince a store manager with direct access to cash office to do this for you. Next time, order your merchandise online on http://Walmart.com and pick it up in store. Last time I returned an item for which I paid online, the clerk didn't need my receipt.