Put your garden under glass! The French developed the glass cloche, or bell jar, to protect an early garden plant from chilly temperatures and frost. This would hasten their crops to maturity. Today French cloches' or bell jar terrariums are a "must have" on the garden scene. Bell jar terrariums or garden cloches make a beautiful garden accent, and are quite functional as well. Accent your garden table, or use as a food cover for your next garden party.