For these wandering thieves, bread, grain, and dried meat aren't a problem, as they can be preserved for a long time. But vegetables are different. Once plucked, they lose their moisture and become wilted or rotten within two to three days.
Sometimes, after having been on the move for a while, they might not have any vegetables for one or two months. Going without fruits and vegetables can result in dry skin, bleeding gums, oral ulcers, constipation, bloody urine, and even severe scurvy.
When desperate, they would even pluck tender leaves from trees to suck the juice out of them. Not to mention these fast-growing vegetables that have just sprouted a small bud, juicy and tender.
Indeed, these vegetables are not mature yet, but there is a vast amount. Picking all of them would be enough for a dozen of them to eat.