Anemone x hybrida ‘Honorine Jobert’ (syn. Anemone japonica) – A particularly tall form of Japanese anemone, with average heights of 3 to 4 feet. The single white blooms are held on erect stems that appear in late summer, blooming into fall. These make good cut flowers and this versatile perennial tolerates both full sun (with even moisture) and partial shade. Zone 5 hardy.
Eupatorium purpureum subsp. maculatum ‘Gateway’ – A spectacular specimen perennial with an absolutely terrible common name, Joe-Pye Weed. Forget the weed reference, as this 6′ tall beauty forms a huge clump with reddish stems and rosy-purple flower heads that the butterflies adore. Blooming in late summer, this plant prefers a full sun exposure. Zone 3 hardy.
Actaea simplex ‘Brunette’ (syn. Cimicifuga simplex) – ‘Brunette’ is a tall (averages 4′ at maturity) structural perennial with bronzed-purple foliage and very fragrant white (or pale pink) whipcord flowers from August to October. There are darker leaved forms such as ‘Hillside Black Beauty’, but these grow much slower. Although often recommended as a woodlander, it does best with part sun. Zone 3 hardy.
Rudbeckia ‘Herbstsonne’ (syn. ‘Autumn Sun’) – An absolute monster of a coneflower, with bright yellow drooping petals surrounding a green cone. These are borne on 6 to 8′ tall stems from midsummer, lasting into the fall. This is another great full sun perennial to attract butterflies and it is very long-lived. Zone 3 hardy.
Ligularia ‘ The Rocket’ (syn. Ligularia stenocephala) – A bold clumping specimen perennial for part sun with domes of heavily toothed foliage. Tall purplish stems emerge in early summer bearing slender spikes of yellow flowers, reaching 4-6′ tall. Ligularias will often look wilted (even when well watered) during summer afternoons, but recover quickly by morning. Zone 4.