The shrubs that furnish a garden. Small and medium shrubs are the versatile, human-scaled woody plants that fill borders, edge paths, and knit the taller structure to the ground, the layer most gardens rely on most.
A rare, semi-evergreen shrub, Baccharis dioica resembles the common groundsel bush, Baccharis halimifolia, but is quite distinct. In 1979, just before Hurricane Frederic did tremendous damage to the Mobile, Alabama area, we found this plant growing behind the dunes on Dauphin Island.
Clethra alnifolia, the summersweet or sweet pepperbush, is a deciduous native of the eastern United States, at home along pond edges, in damp woods, and at the margins of coastal swamps from Maine to Florida. The species spreads gently by suckers into colonies of upright stems, and earns the name sweet pepperbush from the small, peppercorn-like seed capsules that follow the flowers and hang on through winter. For all that, the summer flowers are the reason to grow them: erect bottlebrush spikes, intensely honey-scented, that open over many weeks in the heat of July and August when little else in the shrub border is in bloom.
Clinopodium georgianum is a low, aromatic shrublet of the mint family, prized for highly scented foliage and clouds of pinkish-lavender flowers in late summer and fall, when much of the garden is winding down. Georgia savory makes a fine edging or front-of-border plant for sunny or lightly shaded spots with good drainage, and unlike most of the tribe, this southern native will grow in heavier soils as well as sand.
Conradina canescens 'Gray Mound' is a silver-leaved selection of the false rosemary that grows wild on the deep, pine-fringed sands of the northern Gulf Coast, in Alabama, Mississippi, and the Florida panhandle, where the species once mingled with sea oats and longleaf pine. A member of the mint family, this aromatic shrub carries soft, needle-like foliage in a ghostly silver-gray, and from spring into early summer, sometimes again in the cool of fall, offers a flush of pale lavender to bluish, two-lipped flowers that native bees and butterflies work eagerly.
Hypericum nudiflorum is the early riser among the St. John's Worts, a slender, upright shrub that opens golden flowers as early as May, often a full month ahead of relatives. The blooms carry the many-stamened brush typical of the clan, set against broad, light green, oval leaves that give the plant a softer, leafier look than the needle-leaved species.
Ilex glabra 'Leucocarpa' is the white-berried surprise among the inkberries, a native evergreen holly that trades the usual near-black fruit for berries of clean ivory white. On the ordinary inkberry the dark berries all but vanish against the deep green leaves, but here the pale fruit stands out cleanly and holds on the branches from fall right through to spring, a quiet, unexpected show in the winter garden.
Ilex verticillata 'Red Sprite' is winterberry shrunk to garden size and cranked up in intensity. Where much of the landscape fades to gray, this compact native holly turns into a beacon, the bare stems packed with heavy clusters of large, glossy scarlet berries that color in fall and cling deep into winter, a living ember at the pond's edge or against fresh snow.
Every winterberry covered in red is hiding a secret, and his name is 'Southern Gentleman'. Winterberry hollies are dioecious, male and female on separate plants, and only the pollinated females set the blazing red fruit the species is grown for. No male nearby, no berries. 'Southern Gentleman' is the male who makes the show possible, and asks for none of the credit.
Malvaviscus drummondii is the small Turk's cap, the wild, native cousin of the larger Mexican wax mallow and, for many Southern gardeners, the better plant of the two. A relative of the hibiscus in the mallow family, Malvaceae, this shrubby perennial is native to Texas, the Gulf Coast states, and on south, and grows wild in the dappled shade of woodland edges and stream banks where few other bright flowers will bloom.
Morella pumila is the dwarf waxmyrtle, a low, native evergreen that keeps everything gardeners love about the common wax myrtle, aromatic foliage, waxy berries, and a tough constitution, and shrinks it all to knee height. Native to the frequently burned pinelands of the southern United States, the plant is an adaptation to that fiery world, staying small and spreading slowly into dense patches and colonies by underground runners.
Important: This plant is sold within South Carolina only.In the high-gradient streams of the southern Appalachians, the Gauley, the Bluestone, the Greenbrier, scattered tributaries of the New River, and a handful of similar second- and third-order rivers, grows a shrub that holds on to rocky bars and scoured banks where almost nothing else can. This is Spiraea virginiana, the Appalachian spiraea, a plant that evolved alongside the violent flood regime of these mountain rivers and depends on that disturbance. The floods scour competing vegetation off the banks, expose mineral soil for germination, and break off rhizome fragments that float downstream to colonize new sites. Where the rivers were dammed, the floods stopped, and the spiraea began to disappear.
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.
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'.
Aronia arbutifolia has grown in the wet woods and pocosins of the eastern United States for a very long time, largely unbothered by the horticultural world's attention. 'Brilliantissima' changed that. Selected for foliage with a deeper gloss and berries of a more saturated, almost lacquered red than the straight species, this is the form that finally made gardeners look twice at a native shrub long overlooked despite centuries of quiet usefulness.
Baccharis halimifolia is a plant of edges and thresholds, growing where the land loosens and blurs into water: salt marsh margins, ditches, tidal creeks, and back dunes. In fall, when most things are shutting down, the groundsel bush erupts into a soft storm of white seed fluff, like a marsh firework frozen mid-explosion. This is the shrub that coastal Louisiana calls manglier, that botanists call groundsel bush or eastern baccharis, and that local healers have quietly trusted for generations.
Hardiness
Zones 6–10
Light
Full Sun / Part Shade
Height
8–10 ft.
Spread
5–8 ft.
Bloom
White
Plant type
Shrub
Traditional use
respiratory support, immune support, detoxification & cleansing, general wellness
Bouvardia ternifolia, the firecracker bush, is a compact, heat-loving shrub of the southwestern United States and Mexico, hung from late spring to frost with clusters of long, slender, scarlet-red tubular flowers. Few plants pull hummingbirds in like this one: the bright tubes are pitched exactly for their bills, and the bloom keeps coming through the hottest months when little else holds color.
Leatherleaf is the quiet constant of the northern bog. Chamaedaphne calyculata, the only species in the genus, is a low, thicket-forming evergreen of the heath family that ranges right around the cold northern world, from the peatlands of North America east to the bogs of Finland and Japan, and southward in this country to the pocosins and acid bogs of the coastal plain, as far as South Carolina. Across that vast range, leatherleaf forms the dense, spreading colonies that hold a bog together and shelter the wildlife within.
Summersweet, or sweet pepperbush, is one of the most useful of the native shrubs for moist, shaded ground, and 'Hummingbird' is the compact, free-flowering selection that made the species a garden staple. Like the straight Clethra alnifolia, this is a stoloniferous deciduous shrub that forms colonies in moist, acid soil, valued above all for the upright spikes of intensely fragrant white flowers that perfume the whole garden in the heat of summer, when little else is blooming.