The plants that come back. Herbaceous perennials rise from the crown each spring, flower through the warm months, and retreat to the ground in winter, returning larger the year after. They are the flowering heart of the border, the long-term investment that repays a gardener season after season.
Where blunt mountain mint is all broad silver, Pycnanthemum tenuifolium is the slender cousin, a fine-textured native built from wiry stems and narrow, almost needle-thin leaves. From midsummer into early fall the plant clouds over with flat-topped clusters of tiny white to pale lavender flowers, faintly purple-speckled, and the effect at a distance is a low haze of bloom. What the flowers lack in size they make up in draw: bees, small butterflies, wasps, and beneficial insects work the nectar in numbers that make narrowleaf mountain mint one of the most valuable pollinator plants of the eastern flora.
Hardiness
Zones 6–9
Light
Full Sun / Part Shade
Height
2–3 ft.
Spread
2–3 ft.
Bloom
White
Plant type
Perennial
Traditional use
digestive health, general wellness, topical applications
Rohdea japonica, the sacred lily or Nippon lily, is a bold, slow, tufted evergreen perennial grown above all for foliage, and this selection carries the darkest leaves of all, an almost black, glossy green that anchors a shaded planting through the whole year and lights up a winter landscape when little else holds. Rather sizeable red berries ripen in tight clusters, half-hidden at the base of the leaves, a quiet second season for anyone who looks closely.
Rudbeckia fulgida var. fulgida is the true orange coneflower, the wild species that stands behind the famous 'Goldsturm', quieter, finer, and later to bloom than that celebrated garden child. From a low clump of dark, roughly hairy leaves rise branching stems two to three feet tall, each ending in a small golden daisy about two inches across, the deep yellow rays set around a low dome of brown-black. Where many of the black-eyed Susans have blazed and faded by August, the orange coneflower is only getting started, carrying many small flowers from late summer well into October.
Few spring sights stir the woodland gardener like wild columbine in bloom. Aquilegia canadensis hangs nodding red-and-yellow bells, spurred and lantern-like, over lacy blue-green foliage, catching the low light of April along forest edges, rocky outcrops, and Appalachian coves where the plant has grown for ages. The eastern red columbine, or simply wild columbine, is among the most beloved of native spring wildflowers.
Butterfly weed is the orange star of the summer meadow, a strong-growing native perennial of eastern North America and a longtime favorite of gardeners. Flower color ranges from clear yellow to nearly red, but the typical Asclepias tuberosa blazes a vivid orange that butterflies, and the eye, find from across the garden.
Hardiness
Zones 4–9
Light
Full Sun
Height
12–24 in.
Spread
12–18 in.
Bloom
Orange
Plant type
Perennial
Traditional use
respiratory support, digestive health, pain relief, reproductive health
This is the wild strawberry of eastern North America, Fragaria virginiana, the modest little groundcover that carpets sunny woodland edges, old fields, and roadside banks across the continent. Trifoliate, serrated leaves rise in low tufts, and slender runners reach out to root new plantlets at their tips, so that a single crown becomes a colony in a season or two.
In the dappled understory of the Eastern woods, Geranium maculatum has made a home for as long as the forests have stood. Known to generations as wild geranium or cranesbill, this native perennial forms a tidy clump of softly lobed leaves and lifts loose sprays of rose-purple, five-petaled flowers, as much a part of the old spring landscape as dogwood and trillium.
Pineland hibiscus is the wilder, pricklier cousin among the native mallows, and all the more charming for a slightly untamed look. Through the summer the plant opens broad flowers several inches across in soft creamy yellow, each centered on a deep maroon eye, the classic hibiscus form scaled down and set on a low, spreading, bristly frame. The deeply lobed leaves are rough to the touch and the stems carry fine prickles, so the whole plant reads as a hardy native of open, sunny ground rather than a pampered border hybrid.
The horticulturist Scott Ogden, in Garden Bulbs for the South, sets the scene: the Japanese roof iris, Iris tectorum, is famous in the native country as a flower for planting on sod roofs, just as houseleeks are used on the cottage roofs of France. In gardens the silky green fans of leaves form large patches, a fine subject for the foreground of a shady border, and in April the ruffled, orchid-like blooms appear among the handsome leaves. In the common form these are a rich mottled blue with white crests; even lovelier, Ogden adds, are the white, yellow-crested blooms of the form offered here.
The horticulturist Scott Ogden, in Garden Bulbs for the South, sets the scene: the Japanese roof iris, Iris tectorum, is famous in the native country as a flower for planting on sod roofs, just as houseleeks are used on the cottage roofs of France. In gardens the silky green fans of leaves form large patches, a fine subject for the foreground of a shady border, and in April the ruffled, orchid-like blooms appear among the handsome leaves. This is the common form, in which the flowers open a rich mottled blue, veined and freckled toward the center, with white crests.
Few late-summer plants command a border like Leonotis leonurus, the lion's ear of the South African veld. Tall square stems, the signature of the mint family, Lamiaceae, rise five feet and more before breaking into tier upon tier of burnt-orange flowers, each whorl circling the stem like a ruff. The velvety, curved tubes are the source of both common names, lion's ear and lion's tail, and the botany agrees: Leonotis comes from the Greek for lion's ear, and leonurus for lion's tail.
Hardiness
Zones 8–11
Light
Full Sun
Height
4–6 ft.
Spread
2–4 ft.
Bloom
Orange
Plant type
Shrub
Traditional use
respiratory support, pain relief, topical applications, general wellness
Liatris spicata, the blazing star or gayfeather, sends up rockets of feathery purple in the heart of summer, one of the great vertical accents of the North American prairie. The species is native to the moist meadows, prairies, and wet savannas of eastern North America, where the flower spikes once rose in their thousands among the tall grasses. Set against those horizontal sweeps of grass, the erect, bottlebrush spikes give any planting a jolt of structure and color.
Hardiness
Zones 3–9
Light
Full Sun / Part Shade
Height
2–4 ft.
Spread
1–2 ft.
Bloom
Purple
Plant type
Perennial
Traditional use
immune support, respiratory support, detoxification & cleansing, digestive health
Monarda fistulosa, wild bergamot, is one of the great native perennials of the North American prairie, a hardy, aromatic member of the mint family loved for showy heads of lavender-pink and for a fragrance like oregano crossed with mint. The species grows wild in meadows, prairies, and open woods across most of the continent, and brings both vivid summer color and a deep well of history to the garden.
Patrinia scabiosifolia 'Nagoya' is a tough, upright perennial from the meadows and grassy hills of East Asia, grown for airy, flat-topped heads of tiny golden-yellow flowers held high on wiry, branching stems. The species name scabiosifolia points to the deeply lobed basal leaves, which recall those of a scabious, and the whole plant reads as a chartreuse-gold answer to Queen Anne's lace, lending height and a see-through veil to a summer border. In Japan the species is one of the classic seven flowers of autumn, and 'Nagoya' is a garden selection prized for reliable, compact performance.
Piloblephis rigida, wild or Florida pennyroyal, is a compact evergreen native mint from the sandy scrublands and pine flatwoods of Florida. The plant forms a low, tidy mound of fine, needle-like foliage that carries a clean, resinous, minty fragrance, released at a brush of the hand or on a warm afternoon in the sun.
Hardiness
Zones 8–10
Light
Full Sun
Height
1–2 ft.
Spread
2–3 ft.
Bloom
Purple
Plant type
Shrub
Traditional use
respiratory support, topical applications, general wellness
A spring-blooming native of the eastern woodlands, found from Ontario and Quebec south through the Appalachians and as far west as Minnesota and Oklahoma, growing on rich deciduous forest floors, along streambanks, and at the bases of sandstone canyons. Polemonium reptans is one of those native plants that rewards close attention. The leaves are pinnately compound, with seven to twenty-one paired leaflets running up each stem like the rungs of a ladder, the source of the common name, which gestures all the way back to the biblical Jacob and his dream of a stairway to heaven. The genus name is older still: Polemonium honors King Polemon of Pontus, an ancient Greek ruler with a side interest in herbalism.
Hardiness
Zones 3–8
Light
Part Shade / Full Shade
Height
1–2 ft.
Spread
1–2 ft.
Bloom
Blue
Plant type
Perennial
Traditional use
respiratory support, detoxification & cleansing, topical applications, general wellness
Polygonatum commutatum, the great or giant Solomon's seal, is a bold native perennial of the eastern North American woodlands, sending up tall, unbranched, gracefully arching stems clad in broad, oval, alternate leaves. From the leaf axils along the underside of each stem hang small, creamy-white, bell-shaped flowers, usually in pairs, in late spring and early summer.
Hardiness
Zones 3–8
Light
Part Shade / Full Shade
Height
3–5 ft.
Spread
1–2 ft.
Bloom
White
Plant type
Perennial
Traditional use
pain relief, digestive health, respiratory support, general wellness
Polygonatum odoratum 'Variegatum', the variegated Solomon's seal, is one of the most graceful of all shade perennials, an Old World cousin of the native Solomon's seals grown for luminous, cream-edged foliage on arching stems. Each lance-shaped leaf carries a soft green center rimmed and streaked in creamy white, and the new stems flush a warm rose before greening.
Hardiness
Zones 4–9
Light
Part Shade / Full Shade
Height
1–2 ft.
Spread
1–2 ft.
Bloom
White
Plant type
Perennial
Traditional use
respiratory support, pain relief, digestive health, general wellness
If any native perennial could be said to hum, the honor would go to Pycnanthemum muticum. From mid to late summer the blunt mountain mint gathers a shimmer of broad, silver-frosted bracts at the top of every stem, and within them open dense heads of tiny pink-to-white flowers that draw an almost comic density of life: bees of every kind, wasps, butterflies, skippers, moths, and flies working the nectar from dawn to dusk. In a three-year Penn State study that monitored eighty-six species, no plant drew a greater number and diversity of pollinators.
Cup plant is a giant of the summer prairie, a statuesque perennial that rises on stout, square stems to eight feet or more and lifts a crown of bright yellow, daisy-like flowers above the border. The name comes from a quirk of the foliage: the large, coarse leaves are perfoliate, joined in pairs around the stem to form a shallow cup that catches and holds rainwater. Silphium perfoliatum belongs to the sunflower tribe of the aster family, Asteraceae, and shares that clan's generosity of bloom.
Hardiness
Zones 4–8
Light
Full Sun / Part Shade
Height
4–8 ft.
Spread
2–3 ft.
Bloom
Yellow
Plant type
Perennial
Traditional use
detoxification & cleansing, respiratory support, pain relief, digestive health
