Hi-Desert Medical Center will host a harvest festival Wednesday, October 30 from 4 to 6 p.m. in the Helen Gray Education Center. Kids of all ages are invited to attend in their Halloween costumes. There will be games, prizes, yummy treats and lots of fun for the entire family. The event is free. There will also be trick-or-treating at the Continuing Care Center, just up the road from the hospital. The Hi-Desert Medical Center is located at 6601 Whitefeather Road in Joshua Tree.