Lilies are tall plants with narrow leaves, and bearing up to 25 or more recurved bells, bowls, or trumpets on a stem. Thousands of lily hybrids have been named. Depend upon species, lilies bloom from early Summer through early Fall. If you want to know more about lily, please visit the North American Lily Society. The Royal Horticulture Society and the North American Lily Society group lilies in different divisions. More information about lily can be found at this website. Following are pictures of lilies grown in the St. Louis (Missouri) area (USDA zone 5-6).