Green vegetables

Sandy said to his crony Ron, 'My mother sent me to a greengrocer's to buy some immature vegetables."

'So were we means to find some?" asked Ron.

'Well, when we reached a shop, we asked a manager, 'My mother wants some immature vegetables. Have they been sprayed with any harmful chemicals?''

Sandy continued, 'The shopkeeper told me, 'No, why do not we do it yourself.'