Here's a real showpiece of the woodland! Spikes of bright blue flowers rise from deep green basal leaves in mid-summer, much to the delight of visiting hummingbirds. Campanula americana, Tall Bellflower or American Bellflower, is easy to grow. This self-sowing biennial does best in partial to full shade in medium to moist soil. Hardy to Zones 3 - 8.
Photo courtesy of Kitty Kobul, Wisconsin DNR