Is an Onion Root or Stem? The Surprising Botanical Answer
                                
                                
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                                    3 min read                                
                            
                                Globally, onions are the second largest vegetable crop produced after tomatoes, according to some reports. Despite their widespread use in kitchens, many are unsure: is an onion root or stem? The simple answer is that it is neither, but rather a specialized bulb structure that serves a unique purpose for the plant.