Greengrocer is a merchant that run the vegetable stalls on Miscellania and Etceteria. He sell items such as garlic, potato, tomato, and cabbage. His market stall can also be stolen from with a thieving level of 2.
As with all stall owners, if stolen from, he will not trade with the players for approximately 15 minutes. If spoken to, he will call for the nearby level 1 guards to attack.
Besides, stealing from his stall will also decrease your approval rating with the citizens of the islands, which in turn makes the kingdom management options less effective.