March 7, 2010, 10:30 AM - 3:30 PMAt the Garden - St. Marks Presbyterian Church, 3809 E 3rd St. The garden is actually on 2nd St. so park in the lot off 2nd. Each spring Tucson Organic Gardeners hold an organic garden festival. In addition to their plant and bake sale, there will be educational presentations, a variety of earth friendly vendors, food, raffles and live local music.