The young start to emerge from the den around the first week of June. Woodchucks have to fatten up all summer to prepare them for a long winter of hibernation. The young usually leave the mother's territory around mid-July. Many of the young do not survive the first year. Foxes, dogs, hawks, and coyotes prey upon them in the wild.
Woodchucks are vegetarians.
They eat chickweed and clover, but if things get really bad, they can even eat poison ivy. They prefer beans, broccoli, and certain species of flowers which is why they are such a problem for gardeners. Besides causing damage to your garden, and eating all your hard work, woodchuck problems can be more severe. I have seen where driveways and walkways will collapse. The problem woodchuck digs a tunnel under the blacktop or concrete, and the rain slowly undermines it until it collapses.