Echinacea, commonly called coneflowers, are easy-to-grow, drought-tolerant, summer-flowering perennials that attract both butterflies and hummingbirds. We love echinacea as an addition to a butterfly garden or when used in a mixed-perennial border. Looking lovely in the garden this week is the dazzling coneflower, Echinacea ‘Sombrero Tres Amigos’. You’ll almost need some infrared glasses for these fluorescent-looking flowers.