Recently, there has been a shortage of fresh fruits and vegetables in the UK, and some large supermarkets in the UK, including Tesco, have taken measures to restrict purchases.。A supermarket shelf clearly marked each customer can only buy 3 tomatoes。In addition to tomatoes, many supermarkets also restrict the purchase of daily vegetables such as cucumbers, lettuce and green peppers, and some supermarkets restrict the purchase of up to eight varieties of fruits and vegetables.。In this case, many British people began to buy vegetable seeds。