Through late November: Working apple orchards in Oak Glen, a mountain town halfway between Riverside and Palm Springs, open their doors to the public. Some farms offer U-pick apples. Many farms also produce fresh apple cider, pies and other farm-fresh goods and some farms even let you visit with their animals. Daily. Oak Glen Apple Growers Association. Visit the website for a daily crop report, map, shops, restaurants, tours, and seasonal events and activities from each farm. Most farms are closed Monday.