There’s probably as much joy at blackberry festivals as there is vitamin C in blackberries. While the fruit boosts your immune system, the festival boosts your daily smile count. So blackberry festival attendance is for the greater good. Blackberry festivals around the United States boast things beyond the expected fresh blackberries, blackberry pie and blackberry ice cream. They typically involve a smorgasbord of family fun, such as live music and arts and crafts. Take the Shenandoah National Park Blackberry Delight for example; the good folks there know how to get down with blackberry barbecue.