Carnation

A bold, clump-forming evergreen perennial from South Africa, grown for big rounded umbels of trumpet-shaped blue (or white) flowers held on tall bare stalks above arching, strap-shaped leaves in mid-to-late summer. It is widely sold as "lily of the Nile," but that is a misnomer - the plant is South African (the Cape provinces and KwaZulu-Natal), not from the Nile. Spectacular and easy in warm climates, this evergreen Agapanthus is frost-tender, so in cold-winter areas it is grown in a container and overwintered under cover. The RHS has given several Agapanthus praecox forms its Award of Garden Merit and rates this evergreen species half-hardy (H3 - needs winter protection).

A clump-forming herbaceous perennial grown for its showy late-season flower heads: masses of tiny star-like flowers borne in flattened cymes 3 to 6 inches across that emerge rosy pink, deepen to rose-red, and fade to coppery-rust as they die. Gray-green, fleshy, succulent-like leaves form upright clumps to about 24 inches. Easily grown in dry-to-medium, well-drained soil in full sun, it is drought tolerant and attracts butterflies, and its foliage and dead inflorescences persist into winter for added interest.

A tuberous-rooted member of the aster family native to Mexico and Central America, grown for showy summer-to-fall blooms in nearly every color except blue. Hybrids in commerce span ten flower-form groups (single, anemone, collarette, waterlily, decorative, fall, pompon, cactus, semi-cactus, and miscellaneous) and range from 1 to 6 feet tall. Winter-hardy only to USDA Zones 7-10; in colder regions the tubers are lifted in fall and stored frost-free, so most North American gardeners grow it as a summer annual.

The classic fall-flowering "garden mum" - a compact, clump-forming herbaceous perennial in the daisy family, grown for a prolific late-season flush of showy flowers from September to frost in shades of white, yellow, orange, bronze, purple, and red. A complex hybrid of five Chinese species, not native to North America; widely sold as a one-season annual but hardy in the ground roughly zones 5-9. Deer- and rabbit-resistant, and a welcome late-season nectar source when little else is blooming.

The classic white-and-yellow garden daisy - a clump-forming herbaceous perennial bearing showy single flower heads of white ray florets around a yellow central disc from midsummer into fall. A garden hybrid bred by Luther Burbank in the 1890s near snow-covered Mt. Shasta in northern California, it grows 2 to 3 feet tall and is a mainstay of the perennial border, cottage garden, and cutting garden. Easily grown in dry-to-medium, well-drained soil in full sun, it is drought tolerant, attracts butterflies, and is resistant to deer and rabbit browsing.

The mainstay bulb of the spring garden - a hardy, fall-planted perennial from Europe and North Africa whose flowers rise on leafless stems above strap-shaped foliage. Each bloom shows six petals (the perianth) ringing a central trumpet or cup (the corona) in white, yellow, orange, pink, or bicolor. Almost pest-free and reliably deer- and rabbit-resistant thanks to toxic alkaloids in every part of the plant.