Nutrition experts point out that harvested onions can be stored for a long time and will not germinate or become moldy after drying. But no dried or improperly stored onion will germinate or rot.

Usually, onions germinate most easily around 15C. Onions that germinate or even grow green seedlings will not produce harmful substances, so they can still be eaten. However, after the onion germinates, the nutrients in the scales will transfer to the top for bud growth, which will lead to the decline of nutrients in the onion. In addition, the germination of onion will affect its commodity value, and its taste is also spicy.

So onions should be exposed to the sun for a period of time, and then stored in a ventilated and dry place to avoid germination.