The garden's backbone: flowering trees, native and rare shrubs, and evergreens that hold their shape through every season. Many are Southeastern natives; others are quiet collector's plants you won't find at a big-box nursery, chosen for resilience and lasting, year-round interest.
In July, when most of the shade garden has settled into a holding pattern of foliage and waiting, Aesculus parviflora opens for business. The timing is the first surprise. The flowers are the second. Each panicle is a foot or more of tightly packed white tubular blooms with conspicuous pink-red anthers projecting beyond the petals, the whole spike held upright above the foliage like something assembled by a botanical committee that could not decide between elegant and extravagant and chose both. A mature colony in full bloom in midsummer is among the more spectacular events available to the shade gardener, and the hummingbirds and swallowtails arrive reliably.
A wide-spreading, suckering, multi-stemmed deciduous shrub of slow, deliberate growth, Aesculus parviflora var. serotina carries the same upright white bottlebrush flowers as the bottlebrush buckeye, but opens them two to three weeks later, well into the heat of summer. The overall shape is irregular and almost stratified, the branches layering horizontally, and the medium to dark green leaves turn a clear yellow in fall.
The red buckeye is the South's hummingbird herald, a clump-forming, round-topped deciduous shrub or small tree whose lustrous, palmately compound leaves break very early, often before the last frosts, and whose six-inch panicles of tubular scarlet-red flowers open in spring just as the ruby-throated hummingbirds return north. The bright bloom, unusual among the buckeyes, draws hummingbirds and bees in numbers and gives the plant a long place in the affection of native-plant gardeners across the southern United States.
The yellowwoods are to South Africa roughly what the live oaks are to the Lowcountry: the tree everyone knows, the tree in the old photographs, the tree the furniture was made from. Afrocarpus falcatus, the Outeniqua yellowwood, is the tallest of them, a conifer of coastal and montane forest from the Eastern Cape north through Mozambique and Malawi, reaching thirty to sixty feet in cultivation and a great deal more in the deep forest at Tsitsikamma. The famous specimens live for centuries and carry trunks two or three feet through. Yellowwoods collectively are treated as South Africa's national tree, and cutting one is regulated by law.
Agarista populifolia, still catalogued nearly everywhere as Leucothoe populifolia, is the giant of a group otherwise built low to the ground. Where most leucothoes hug the shade at knee height, this one rises, sending up tall, erect stems that arch at the tips into a fountain of glossy evergreen leaves, and given years and room the shrub can pass for a small multi-stemmed tree of twelve to fifteen feet.
Korean mountain ash is the unusual member of the clan, a deciduous tree from Korea, recently moved by botanists from Sorbus into the genus Alniaria, with simple, finely toothed, alder-like leaves rather than the compound leaves of the familiar mountain ashes. White flower clusters open in May, and the fall foliage turns warm shades of orange and red.
Seaside alder is a medium to large deciduous shrub, sometimes a small tree, with glossy, oval, toothed leaves and a habit of doing things backward. Where every other native alder flowers in spring, Alnus maritima opens elongated catkins in the fall, then carries small, woody, pinecone-like fruits through winter for quiet ornament.
Sweet almond verbena is grown for one glorious thing above all: scent. From midsummer until hard frost, Aloysia virgata tips every branch with slender spikes of small white flowers that pour out an intoxicating vanilla-almond fragrance, strongest in the late afternoon and evening and carrying clear across a garden. Butterflies and hummingbirds work the spikes all season.
Amelanchier canadensis is the coastal-plain member of a confusing and much-loved genus, a suckering multi-stemmed shrub or small tree of fifteen to twenty-five feet that reads as a thicket in the wild and as an airy vase in the garden. The show begins absurdly early: white flowers in short upright racemes open on bare gray wood while the woods are still brown, hold for a week or so, and then go. Fruit follows in June, raisin-sized, ripening green to red to a deep purple-black, sweet with a faint almond note. Autumn runs from yellow through orange to russet-red, and the bark, smooth and silver-gray with darker striping, carries the winter.
Hardiness
Zones 4–8
Light
Full Sun / Part Shade
Height
15–25 ft.
Spread
15–20 ft.
Bloom
White
Plant type
Shrub
Traditional use
digestive health, general wellness, immune support, reproductive health
Among the rarest of the serviceberries, Amelanchier nantucketensis is a low, thicket-forming shrub that Eugene Bicknell first described in 1911 from the sandplains of Nantucket, the Massachusetts island whose name the plant carries. Nantucket serviceberry belongs to a small, taxonomically slippery group within the rose family, so closely tangled with neighboring shadbushes that botanists have argued for more than a century over whether this is a true species or a stabilized hybrid. What sets the plant apart is disarmingly small: petals shorter than those of any other serviceberry in the Northeast, often dusted with pollen along their own margins, a quirk called andropetaly that appears nowhere else in the group.
Coastal serviceberry is the compact, low-growing member of a beloved native clan, a small deciduous shrub of the Atlantic coastal plain that spreads gently into colonies and opens clouds of white, five-petaled flowers in early spring, among the first shrubs to bloom as the woods wake.
Amelanchier x grandiflora is the apple serviceberry, a naturally occurring cross between two eastern natives, the downy serviceberry and the smooth Allegheny serviceberry, and 'Autumn Brilliance' is the selection that made the group famous. The Illinois nurseryman Willet Wandell found this seedling in his Urbana nursery and introduced the plant to gardens in 1986 under U.S. Plant Patent 5,717, choosing the seedling above all for the blaze of autumn color behind the name. Decades on, 'Autumn Brilliance' remains the most widely planted serviceberry in the trade, prized for a vigorous, gracefully branched frame and reliable good looks in every season.
Apple serviceberry, Amelanchier x grandiflora, is the graceful natural hybrid of two eastern native serviceberries, the downy and the smooth Allegheny, and 'Princess Diana' is among the loveliest selections of the group. The plant appeared in a cultivated garden in Elm Grove, Wisconsin, was propagated and introduced by Tom Watson of Christom Farms Nursery in Cambridge, Wisconsin in 1983, and was granted U.S. Plant Patent 6,041 in 1987, chosen for a wide, gracefully spreading canopy, generous white bloom, and fall color that arrives early and holds late. Where many serviceberries grow stiffly upright, 'Princess Diana' reaches outward, a small tree with the airy, layered poise the name suggests.
Smooth false indigo is a rare deciduous shrub of sandy southern streambanks, carrying pinnate, compound leaves whose leaflets are notably large and rounded, a softer, more luxuriant texture than the ferny foliage of the common false indigos. In early summer the branch tips raise slender spikes of tiny blue to purple flowers, each lit with the bright orange anthers typical of the genus.
Flame acanthus, better known as hummingbird bush, is a tough, airy deciduous shrub for hot, dry places, hung from late spring until frost with slender orange to red tubular flowers that ruby-throated hummingbirds cannot resist. Small, pointed leaves give a light, open texture, and the long bloom season makes Anisacanthus wrightii one of the best hummingbird plants for the southern garden.
A pumpkin-orange selection of the classic flame acanthus, Anisacanthus wrightii 'Pumpkin' trades the usual scarlet for warm, glowing orange, lighting the late-season garden with the same slender, tubular, hummingbird flowers. The clone was discovered at the San Antonio Botanic Garden and is generally taken to be the selection known as 'Pumpkin'.
Araucaria angustifolia is a living relic, one of the last of an ancient conifer family that shaded the dinosaurs across the supercontinent of Gondwana. The Paraná pine belongs to the Araucariaceae, kin to the Chilean monkey puzzle, the Norfolk Island pine, the Australian bunya, and the famously rediscovered Wollemi pine, a lineage once spread worldwide and now scattered mostly across the Southern Hemisphere. Despite the common name, the tree is no true pine at all, but something far older and stranger, holding stiff, sharp, dark green leaves on the branch for a decade or more.
The strawberry tree is a handsome broadleaf evergreen, a large shrub or small tree hung in fall and early winter with clusters of nodding, urn-shaped, pinkish-white flowers, just as the previous year's fruit ripens to warty, orange-red, strawberry-like globes. Flowers and fruit on the branches at once is the particular charm of Arbutus unedo, and the glossy leaves and shredding cinnamon bark hold interest year round.
Hardiness
Zones 7–9
Light
Full Sun / Part Shade
Height
15–25 ft.
Spread
10–15 ft.
Bloom
White
Plant type
Shrub
Traditional use
detoxification & cleansing, digestive health, heart support
A hybrid strawberry tree, Arbutus x andrachnoides crosses the strawberry tree, Arbutus unedo, with the Grecian strawberry tree, A. andrachne, and takes the best of both: white, bell-shaped flowers and pink, strawberry-like fruit on a small evergreen tree, over dark green leaves an inch and a half to four inches long. The real prize comes with age, when the bark peels away to a smooth, rich red-brown that rivals any madrone.
A small shrub built like a miniature tree, Ardisia crenata rises on one clean stem to two or four feet, occasionally six, and carries a single tier of glossy dark green leaves at the top like a parasol. The leaf margins are thick and scalloped, waved just enough to catch the light along the edge. Small white to pale pink stars hang in nodding clusters in late spring, lightly scented, and are followed by the reason anyone actually grows the shrub: tight bunches of round, lacquer-red berries that hold from autumn straight through to the next flowering.
