The native deciduous azaleas of the southeastern United States bloom in a long relay, from the pinxters and Piedmont azaleas of March through the flame azaleas of April and May and on into July with the red of Rhododendron prunifolium. And then, once most gardeners have closed the azalea chapter for the year, Rhododendron serrulatum opens. Hammocksweet azalea is the last of the line, flowering in August and September and sometimes later still.
The glaucous swamp azalea is a native deciduous shrub of the wetland South and the eastern seaboard, a blue-leaved form of Rhododendron viscosum, the widespread swamp azalea that ranges from the Gulf Coast north into New England. The variety glaucum sets the plant apart with foliage washed in a soft blue-green, most striking on the leaf undersides, which flash pale as a breeze turns them. Where many shrubs falter, this azalea thrives in the consistently moist, even boggy ground of swamps, marshes, and stream banks.
The swamp azalea, Rhododendron viscosum, ordinarily opens white; this selection breaks pink. 'Roseum' is a rose-flushed form of the familiar native, chosen and introduced by Woodlanders from a plant of Aiken County, South Carolina provenance, a home-ground selection that carries the sweet, clove-like fragrance of the species in a warmer color. The swamp azalea ranges widely across the eastern United States, from the Gulf Coast north into New England, threading the wet margins of swamps, bogs, and stream banks where few other flowering shrubs will follow.
Fragrant sumac is a versatile deciduous shrub native across much of the eastern and central United States, where the plant threads scattered woodlands, rocky slopes, and open banks. The trifoliate leaves, often mistaken at a glance for poison oak, are entirely harmless, and a crushed leaf releases the clean, lemony-resinous scent that gives the plant every one of the common names, from fragrant sumac to skunkbush, depending on the nose. The genus name Rhus is the old Greek and Latin word for the sumacs, and the epithet aromatica names the scent directly.
Hardiness
Zones 3–9
Light
Full Sun / Part Shade
Height
4–6 ft.
Spread
4–6 ft.
Bloom
Yellow
Plant type
Shrub
Traditional use
digestive health, topical applications, general wellness
'Gro-Low' is the ground-hugging form of the native fragrant sumac, a low, wide-spreading deciduous shrub that stays one to two feet tall while reaching six to eight feet across, knitting into a dense, weed-smothering carpet. The glossy trifoliate leaves are often mistaken at a glance for poison ivy or poison oak but are entirely harmless, and a crushed leaf gives off the clean, lemony scent that names the species.
Hardiness
Zones 3–9
Light
Full Sun / Part Shade
Height
1–2 ft.
Spread
6–8 ft.
Bloom
Yellow
Plant type
Groundcover
Traditional use
digestive health, topical applications, general wellness
Smooth sumac is a bold, colony-forming native shrub of the eastern and central United States, in time reaching the scale of a small tree, and one of the finest plants going for a hot, dry, sunny site where little else will thrive. The long, pinnately compound leaves give an almost tropical texture through summer, and the plant spreads by root suckers into broad, picturesque colonies, or can be held to a single tree-like specimen where the suckers are controlled.
Hardiness
Zones 4–8
Light
Full Sun
Height
9–15 ft.
Spread
10–15 ft.
Bloom
Yellow
Plant type
Shrub
Traditional use
digestive health, respiratory support, topical applications, general wellness
Michaux's sumac is a low, colony-forming native shrub, rhizomatous and densely hairy, rising only one to three feet on erect stems from a spreading root system. The compound leaves turn beautiful shades of orange and red in fall, and the dwarf, running habit makes the plant a fine, well-behaved groundcover-scale sumac for a sunny to lightly shaded native planting.
Littleleaf sumac is a big, bushy deciduous shrub of west Texas, the Southwest, and adjoining Mexico, built for heat, sun, and drought. The compound leaves are made up of tiny leaflets that give a fine, almost feathery texture, and they turn rose to purple in fall, an unusual and lovely tone among the sumacs. Tough and dryland-hardy, the plant is well worth trying in the South and any hot, well-drained garden.
Staghorn sumac is a bold native shrub or small tree of the northeastern United States and Canada, growing fifteen to thirty feet on stout, forking stems clothed in fine velvety hairs, the texture and antler-like branching that give the plant the name. The big, pinnate leaves are bright green through summer and turn a spectacular blend of yellow, orange, and red in fall, one of the great autumn shrubs of the eastern flora.
Hardiness
Zones 4–8
Light
Full Sun / Part Shade
Height
15–30 ft.
Spread
15–20 ft.
Bloom
Yellow
Plant type
Shrub
Traditional use
digestive health, respiratory support, topical applications, general wellness
Granite gooseberry is a rare native shrub of the rocky, granitic soils of the Southeast, turning up in widely scattered localities from Georgia to Texas. A low, deciduous plant of two to four feet, the arching branches root where they touch the ground and knit slowly into colonies, and the small, three-lobed leaves and purple, red-spined stems give the shrub a fine, distinctive texture.
Miccosukee gooseberry is one of the rarest shrubs in the Southeast, a federally threatened native known from just two places on earth: a single site in McCormick County, South Carolina, and another in Jefferson County, Florida. The low, arching shrub, two to four feet tall, carries spiny branches and forms small thickets on shaded hardwood-forest hillsides, and small, long-petaled, creamy flowers hang from the branches in their season, followed by half-inch greenish fruits armored with soft, flexible spines.
Rougeplant is a small, soft-stemmed perennial of the pokeweed family, native to Florida, Texas, and the warm Americas, grown for the long show of tiny flowers and the shining strings of bright red berries that follow. Where common pokeweed is coarse and towering, rougeplant is refined and knee-high or less, with small leaves and delicate, arching sprays that carry flowers and ripe fruit at the same time for months on end.
Hardiness
Zones 8–9
Light
Part Shade
Height
6–18 in.
Spread
8–12 in.
Bloom
White
Plant type
Perennial
Traditional use
respiratory support, topical applications, digestive health
The dwarf pink locust is a charming, little-known native shrub, a low, stoloniferous plant of one to two feet with compound, deciduous leaves and hanging clusters of pretty pink pea flowers in spring. Scattered through the sandy pinelands of the southeastern United States, the plant spreads quietly by underground runners into a low colony, since seed is virtually never set and the shrub increases almost entirely by vegetative means.
The swamp rose is one of the few roses that truly loves wet feet, a tall, graceful native shrub of the eastern United States that grows wild along pond edges, streambanks, and in the low, seasonally flooded ground where garden roses would drown. Reaching four to eight feet on arching, sparingly thorny canes, the plant opens fragrant, single, clear pink flowers through the summer, each a simple five-petaled saucer around a boss of gold stamens, a soft, untamed beauty far from the tidy hybrid tea.
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.
Rudbeckia grandiflora is the tall, wild aristocrat of the coneflowers, sending stiff stems three to six feet high above a clump of coarse, sandpapery leaves to carry large golden daisies through the heat of high summer. The ray flowers droop back from a prominent, dark chocolate-brown central dome in the loose, unbuttoned way of the prairie species, giving the flower a windblown grace that the stiff garden hybrids have long since bred out.
Rudbeckia maxima is the giant of the coneflowers, and grows nothing at all like a black-eyed Susan. From a bold basal rosette of huge, smooth, paddle-shaped leaves the color of blue-gray wax rise bare flower stems five to seven feet tall, each topped by a golden daisy whose drooping rays hang like a skirt beneath a strikingly tall, dark central cone. The effect, foliage and flower together, is pure architecture.
Rudbeckia missouriensis is the black-eyed Susan of the Ozark glades, a tough, long-lived native that covers itself in glowing orange-yellow daisies from the first heat of summer straight through to frost. Narrow, hairy, gray-green leaves and slender stems give the plant a finer, softer look than the coarse garden Susans, and the sheer length of bloom sets the species apart, flowering on through the drought and heat that shut down lesser perennials.
Rudbeckia mohrii is a coneflower unlike any other, and the surprise is in the leaves. Where the rest of the clan spreads coarse, broad foliage, Mohr's coneflower sends up narrow, firm, grass-like blades, upright from the base, so that out of bloom the plant could be mistaken for a sedge or an iris. From this fountain of green rise slender, nearly leafless stems, two to four feet tall, each carrying three to ten bright yellow daisies with reddish-brown to dark purple centers from late spring well into fall.
Rudbeckia nitida is a tall, luminous coneflower that trades the coarse hairiness of the common black-eyed Susans for smooth, glossy, dark green leaves and hairless stems, the shining foliage that gives the species a name. From a leafy base rise slender stems three to five feet tall, each carrying a large yellow daisy whose soft rays droop back from a raised, greenish-brown central cone, blooming through the heat of mid to late summer.
