Honorine Jobert Japanese Anemone
Anemone x hybrida
Pure white flowers, featuring broad overlapping petals around a golden center, open on branched airy stems from late summer into fall above bold dark leaves. Happy in sun or a little shade, and best staked discreetly—just in case—but can be vigorous. Introduced back in 1858, and sometimes sold simply as Alba.
Height: 20 to 48 inches; hardy to USDA Plant Hardiness Zone 4
Firewitch Alpine Pink
Small, prolific, strongly scented and prettily fringed vivid magenta-pink flowers in summer and fall are backed by evergreen tufts of silvery foliage. This variety of Dianthus is tough, adaptable, very hardy, and one of the best in humid heat. It needs sun and good drainage. Perennial Plant of the Year in 2006. Sometimes listed as Feuerhexe.
Height: 8 inches; zone 3
Rozanne (Gerwat) Cranesbill
Attractive marbled green foliage is dotted with white-eyed blue flowers for a very long season from early summer well into fall. Good groundcover around roses or shrubs, or as a specimen in containers, and best in moist, well-drained soil in sun. Vigorous, but does not spread by rhizomes like some other geraniums. Perennial Plant of the Year in 2008.
Height: 15 inches; zone 5
Sugar Blues Bearded Iris
This is the bearded iris with everything. Its gorgeous rich blue coloring really sparkles, with the additional flash from its white beards; it’s a dependable rebloomer all over the country, its fragrance is strong and sweet, and it lasts well when cut for the house. Just give it plenty of sun and divide every 3 years.
Height: 3 feet; zone 3
Becky Shasta Daisy
Leucanthemum x superbum
Classic, orange-centered white daisies open over an unusually long season. Good in borders and for cutting, and popular with butterflies, it’s best in sun and in any reasonable soil. Descended from the original Shasta daisy hybrids developed by the pioneer of plant breeding Luther Burbank in 1890. Perennial Plant of the Year in 2004.