Now celebrating the lucky thirteenth year, the Garden brings another outstanding Outlaw Field summer concert season featuring the nation’s best musical artists to the Treasure Valley. The Garden, with the sun setting behind the stage and the foothills encircling, makes an ideal location to listen to the music of your favorite performers. Picnics are allowed. No alcohol or glass containers maybe be brought in. Food, beer, and wine are offered on-site for purchase. No firearms or knives of any kind may be brought inside. On-site cooking or barbecues are not allowed. Please help the Garden stay green and clean by packing out what you packed into the venue. The Idaho Botanical Garden is a nonprofit botanical garden located on 50 acres at 2355 North Old Penitentiary Road, Boise, Idaho, United States. Until 1973 the site served as the Old Idaho State Penitentiary's farm and nursery.