1 week of Calyx Summer Camp. Your 5 - 9 year old child will join in a week of outdoor adventure and fun at Calyx School's summer camp. You can select from one of four weeks (which are held at South Whidbey Tilth and run Monday - Thursday, 9:30 - 2:30 from the end of June through the end of July, exact dates TBA). Calyx Camps provide old-fashioned outdoor summer fun, connecting kids with nature through games, play, gardening, hiking, exploring, dreaming, and creating.