Vast and varied group (about 300 species) encompassing trailers, creeping or tufted miniature perennials, and erect kinds 1 to 6 ft. high or taller. Usually, flower stalks rise above basal leaf rosettes; basal leaves often differ from stem leaves. The perennial species tend to spread indefinitely from the root; width depends mainly on vigor of their rootstocks and time they have been in one spot. Flowers are generally bell shaped, though some are star shaped, cupped, or round and flat. Bloom comes at some time from spring to fall, depending on species. Most species are grown fairly easily from seeds sown in spring or early summer.
Strong-growing, slender, erect stems 2–3 ft. tall. Plants leafy at base. Basal leaves smooth-edged, green, 4–8 in. long. Stem leaves 2–4 in. long, shaped like leaves of peach tree. Flowers are open, cup shaped, about 1 in. across, held erect by short side shoots on sturdy stems. Blue, pink, or white, depending on variety. Summer blooming.
Choice plant for borders. Easy to grow from seed sown in late spring.
Slowly spreading clump, 2 to 3 in. high. Slender, upright flower stems, some branched, 6 to 18 in. tal...
Compact, spreading, leafy tufts, to 6 in. tall. Flower stems upright, branching; usually about 8 in. t...
Grows 10 in. tall, 16 in. wide. Bright red new growth ages to shades of orange and rich reddish brown....