Northern Exposure™ 'Lime' Coral Bells is a showstopper, and the dazzle is only beginning with its citrus-hued foliage. Lemon-lime leaves light up shade and sunny gardens alike, forming low-growing mounds that complement neighboring plants. In late spring and early summer, spires of rust-red bell-shaped blooms add to the show, floating on wiry stems to attract bees, butterflies, and other pollinators. This knockout perennial is exceptionally cold hardy, too. (Heuchera)