A previously announced recall for vegetables and bagged salads has expanded to include more produce sold at Walmart, Aldi and other retailers in 18 states. Last month, Wiers Farm Inc. of Ohio voluntarily recalled some produce, including bagged peppers, green beans, salad cucumbers, organic yellow squash, and organic zucchini squash due to listeria contamination. Now, that recall has expanded to include various other produce sold in individual units or by the pound, such as the following, according to the U.S. Food and Drug Administration: Anaheim peppersCilantro – sold in bunchesCubanelle pepp…