The middle storey of the garden, built to last. Large shrubs bridge the gap between the canopy and the ground, giving height, screening, and year-round substance without the scale or wait of a full tree.
Citrumelo 'Dunstan' is a hardy heirloom hybrid of the rugged trifoliate orange, Citrus trifoliata, and the sunlit grapefruit, Citrus paradisi, and from that unlikely marriage comes a fruit and tree of real merit. The golden-yellow globes swell to nearly four inches across, fragrant, and, touched with sugar, carry the tart refreshment of a grapefruit picked a little shy of ripe. Here is fruit both rustic and refined, bred for survival yet still hinting at the orchard.
Woodlanders has long led in offering citrus and citrus hybrids hardy well beyond the usual citrus belt, and the Morton citrange is a handsome one. Like other sweet orange and trifoliate orange crosses, Morton makes an attractive ornamental evergreen, with fragrant white spring flowers and orange fruit, but the fruit here sets the cultivar apart: large, smooth-skinned, and remarkably like a true orange, with very few seeds.
A very old Chinese cultivar, almost certainly named for the capital of Hunan province where the fruit has been grown for centuries, and quite possibly carrying C. ichangensis somewhere in the parentage. That suspected ancestry would account for the cold tolerance that has made Changsha the parent stock for nearly every modern hardy citrus breeding program of consequence: Wayne Hanna's seedless work at UGA Tifton, the Arctic Frost satsuma cross out of Texas, and others still in trial.
Woodlanders has long led in offering citrus and citrus hybrids hardy well beyond the usual citrus belt, and Citrus taiwanica is one of the tougher evergreens of the group. A vigorous, upright, spreading, thorny tree, the Taiwan orange bears sour tangerine-to-orange fruit that is both ornamental and useful, the base of a very tasty ade. One of the hardier evergreen citrus, the tree sets good crops here in Aiken, South Carolina.
Every grafted citrus tree is two plants pretending to be one: a familiar fruiting top, and a rootstock below the graft union doing the unglamorous work of roots, vigor, and disease resistance. US-1516 is one of the latter, and a good story all the same. The cross was made by the USDA in 1975, a pairing of opposites: African pummelo, the giant of the genus, crossed with Flying Dragon, the contorted, fiercely thorned, cold-hardy form of trifoliate orange (Poncirus trifoliata) that lends so many hardy citrus their backbone. The seedlings went into the ground at the Whitmore farm in Groveland, Florida in 1976 and then, in the patient way of tree breeding, were watched for forty years. Kim Bowman's program at the USDA lab in Fort Pierce released them at last in 2015, into the worst of the huanglongbing epidemic, the bacterial greening disease that has hollowed out Florida's groves. On infected ground they keep their grafted tops healthier and more productive than the old standbys. We offer them ungrafted, which is an unusual thing to sell and an honest one: this is a tree for the cold-hardy citrus tinkerer, the person who wants to practice budding, raise their own understock, or simply grow the trifoliate-blooded foundation and see how far north the plant will go. They come nearly true from seed, vigorous and uniform, and they ask only that you have plans for them. Graft them bold, or just let them teach you the lower half of the tree.
A native of China, Korea, Japan, Taiwan, and parts of South Asia, Clerodendrum trichotomum has been cultivated in Western gardens since the mid-1800s, when the shrub was introduced from Japan and quickly adopted across Europe and the American South for uncanny late-season performance. This is the hardiest member of the genus and, for our money, the most theatrical.
Golden dewdrop, Duranta erecta, is a member of the verbena family grown across the warm world for two ornaments the shrub carries at once: loose, drooping sprays of soft lilac-blue flowers, each with a darker eye, and long chains of round, glossy amber berries that hang like strings of wet gold. The common name catches that second gift exactly, while older names, pigeon berry and skyflower, catch the first. Native from Mexico and the Caribbean through much of tropical South America, the shrub has been carried into gardens throughout the subtropics, where the plant flowers and fruits nearly year round.
Duranta serratifolia, the tala blanco of northern Argentina, is a South American cousin of the familiar golden dewdrop and belongs, like all Duranta, to the verbena family. The species epithet serratifolia means saw-toothed leaf, for the finely serrated margins that separate this plant from the smoother-leaved dewdrops. In the wild the shrub grows through the dry forests and thorn scrub of the Argentine northwest, where the common name, roughly white tala, sets the plant among the talas, the spiny native trees and shrubs that give those woodlands their character.
Erythrina × bidwillii is one of the great show-stoppers among the coral beans, a bold hybrid between the Argentine cockspur coral tree, Erythrina crista-galli, and the southeastern native coral bean, Erythrina herbacea. From that crossing comes a plant with the size and drama of the South American parent and the toughness of the North American one, throwing long spikes of vivid, tubular scarlet flowers through the summer, far larger and more sustained than either parent alone.
Few fruits carry the weight of centuries quite like the common fig. Ficus carica, native to the sun-soaked hills of the Mediterranean and the Middle East, has graced gardens and tables since biblical times, and no member of the tribe is more beloved in the American South than 'Celeste', the little fig so sweet that growers have long called the tree the Sugar Fig.
Hardiness
Zones 7–10
Light
Full Sun
Height
6–12 ft.
Spread
8–15 ft.
Plant type
Shrub
Traditional use
digestive health, topical applications, respiratory support
Few plants carry a story like the Franklin tree. Collected from the banks of the Altamaha River in Georgia by John and William Bartram in the 1760s and named by them for their friend Benjamin Franklin, Franklinia alatamaha was last seen growing wild around 1803 and has never been found in nature since. Every Franklinia alive today, in every garden and arboretum on earth, descends from the seed the Bartrams carried home to Philadelphia. To grow one is to hold a living piece of that lineage.
Hamamelis virginiana does everything backwards, and that is the entire appeal. When the rest of the woods has shut down for the year, when the leaves are gone and nothing else is in flower, witch hazel chooses that exact moment to bloom: spidery yellow flowers, all thin crimped strap-like petals, scattered along the bare branches through late fall and into the cold. They carry a faint sweet scent on a mild day and they wait, patiently, for whatever gnat or late fly is still working, because almost nothing else is. This is the shrub that flowers when flowering makes no sense, and is all the more loved for the defiance.
Ilex 'Apollo' has one job in the garden, and does it superbly: pollination. A vigorous hybrid deciduous holly from the U.S. National Arboretum, crossing the Japanese winterberry, Ilex serrata, with the native American winterberry, Ilex verticillata, 'Apollo' was bred and released specifically as the male partner for the celebrated female 'Sparkleberry', and stands in equally well for 'Winter Red'.
Illicium parviflorum, the Ocala or small anise, is a rare Florida endemic, an aromatic evergreen of the star-anise family, Schisandraceae, tougher and more sun-tolerant than its showier cousin the Florida anise. 'Florida Sunshine' is the selection that made the species famous: a form whose foliage glows chartreuse-gold through spring and summer, holding the anise scent of the genus in leaves that light up a shaded corner.
Itea, the sweetspires, are graceful shrubs of the family Iteaceae, their name taken from the Greek word for willow, after leaves that recall a willow's. Itea chinensis is the Chinese sweetspire, an uncommon evergreen member of the group, a medium to tall shrub of neat, compact form with oval, glossy leaves that hold through the year in the warm South. In spring the plant hangs slender four-inch spikes of small white flowers, softly fragrant and busy with bees.
Itea, the sweetspires, are graceful shrubs of the family Iteaceae, named from the Greek word for willow after their willow-like leaves. Itea oldhamii is a little-known evergreen sweetspire from Taiwan, a compact shrub with an unusual party trick: the juvenile leaves can be holly-like, edged with small teeth, while the mature leaves settle to a smooth, entire margin. In late spring the plant carries racemes of small white flowers over glossy evergreen foliage.
Spicebush is the shrub that tells you the ground is good. Early land surveyors in the eastern states used Lindera benzoin as an indicator of rich agricultural soil, and the rule holds in the garden: where spicebush thrives, most things will. The plant is a common understory shrub of moist, rich woods from Ontario to Florida and west to Texas, growing six to twelve feet in a loose rounded mass, often colonial from root sprouts, and every part smells of citrus and pepper when bruised.
In the dead of winter, when the garden asks for little and gives less, Lonicera × purpusii answers with perfume. This winter honeysuckle is a hybrid of two Chinese species, Lonicera fragrantissima and Lonicera standishii, and carries the best of both: small, creamy-white, tubular flowers that open along the bare stems from late winter into early spring, throwing a clean, lemon-sweet fragrance that carries yards on a mild day.
Myrcianthes fragrans is a member of the myrtle family native to the hammocks and coastal scrub of Florida and the Caribbean, the same botanical neighborhood as guava and allspice, which says something about the family character and the quality of the fragrance involved. Crush a leaf and the scent is immediate and specific: nutmeg with a citrus edge, clean and resinous in a way that makes the plant worth encountering even out of flower. The tiny, deep green leaves hold the aromatic oils responsible, and keep that quality year-round.
Oleander, Nerium oleander, is the great sun-loving evergreen of the Mediterranean, grown since antiquity for a long summer of bloom, with dark green, leathery, lance-shaped leaves in whorls of three along long, sparingly branched stems. 'Hardy Pink' is one of the cold-tougher selections, carrying showy, lightly fragrant clusters of clear rose-pink flowers from late spring well into fall.
