Plants that ask for water while they root, then fend for themselves. Chosen for gardens on sand, slope, or full baking sun, these are the tough, sun-loving plants that flower hardest in the heat and shrug off a dry August once established.
Rosemary is a timeless classic in both the garden and the kitchen, an aromatic evergreen shrub of the sun-baked Mediterranean coast, so distinctive that botanists long kept rosemary in a genus apart, Rosmarinus officinalis, before recent study moved the herb into the sages as Salvia rosmarinus. The old genus name means dew of the sea, for the plant's love of bright, salt-swept coastal hillsides. Slender, needle-like, deep green leaves clothe the woody stems the year round, and soft blue flowers open along them from winter into spring.
Hardiness
Zones 7–10
Light
Full Sun
Height
2–4 ft.
Spread
2–3 ft.
Bloom
Blue
Plant type
Shrub
Traditional use
digestive health, mental & emotional well-being, general wellness, topical applications
A graceful native onion, Allium cernuum, the nodding onion, lifts loose clusters of pink to lavender, bell-shaped flowers that bend over in a soft arc at the top of slender stems, swaying through mid and late summer above tufts of grassy, blue-green foliage. The nodding habit gives the plant a particular charm, and the flowers draw native bees, butterflies, and other pollinators in good numbers.
Hardiness
Zones 4–8
Light
Full Sun / Part Shade
Height
12–18 in.
Spread
6–8 in.
Bloom
Pink
Plant type
Perennial
Traditional use
respiratory support, digestive health, immune support
Buddleja salviifolia, the sage-leaf butterfly bush, is a medium to large evergreen shrub from the sun-soaked hillsides of South Africa, and despite the exotic origin the plant has proven remarkably hardy in southeastern gardens, coming through winters at the University of Georgia's Athens trials with quiet resilience.
Hardiness
Zones 7–9
Light
Full Sun / Part Shade
Height
10–12 ft.
Spread
8–10 ft.
Bloom
Purple
Plant type
Shrub
Traditional use
respiratory support, digestive health, topical applications, general wellness
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
Ptelea trifoliata, the hop tree or wafer ash, is a unique and underappreciated native, a small, bushy deciduous tree of eastern and central North America. Highly adaptable, the plant takes dry, rocky ground as readily as moist, well-drained sites, which makes the hop tree a fine choice for naturalized landscapes, pollinator gardens, and woodland edges.
Ruscus aculeatus, Butcher's Broom, is a low evergreen shrub of the asparagus family, native to the woodlands of southern Europe, the Mediterranean, and the Middle East, and reaching north into the milder parts of the British Isles. What look like glossy, spine-tipped leaves are not leaves at all but flattened stems called cladodes, which take over the work of photosynthesis while the true leaves are reduced to tiny scales. The generic name comes from the Latin ruscum, the old word for a butcher's broom, and the epithet aculeatus means prickled, for the sharp point that tips each cladode.
Salvia microphylla 'Deltoid' is a shrubby form of the littleleaf or baby sage grown for warm salmon-coral flowers and neat, triangular, deltoid leaves. The small tubular blooms open over a long season and read as a soft coral against the fine, glossy foliage, a gentler tone than the hot scarlet of many littleleaf sages.
Salvia microphylla 'Hot Lips' is the famous temperature-shifting bicolor of the littleleaf sages, and the trick is worth the fame. In the cool of spring the flowers may open pure white or pure red, but as summer heat builds they turn strikingly two-tone, white below with a bold red lip, so that a single plant can carry white, red, and red-and-white flowers all at once. The show runs from late spring until frost.
American basswood is one of the great shade and honey trees of eastern North America, a fast, stately deciduous tree with large, heart-shaped, softly toothed leaves and a broad, rounded, generous crown. Tilia americana has been cherished by Indigenous peoples, European settlers, and naturalists alike, and goes by a string of names: linden, bee tree, and lime, though the tree is no relation to the citrus lime. In late spring and early summer, hanging clusters of pale yellow, sweetly fragrant flowers open and hum with bees.
Hardiness
Zones 3–8
Light
Full Sun / Part Shade
Height
60–80 ft.
Spread
20–30 ft.
Bloom
Yellow
Plant type
Tree
Traditional use
mental & emotional well-being, respiratory support, digestive health
A tough, salt-defying seaside groundcover with a serious caveat. Vitex rotundifolia, best known as beach vitex, is a low, prostrate, trailing shrub of the mint family, native to the coasts of eastern Asia, the Pacific islands, and Australia, where the plant binds shifting sand along the shore. Rounded, blue-green leaves about two inches across clothe the running stems, aromatic and slightly spicy when crushed, and spikes of bright lavender-blue flowers open in late summer.
A native tree that bites back, and can numb a toothache. Zanthoxylum clava-herculis, the toothache tree or Hercules' club, is a small to medium deciduous tree of the citrus family, native along the coastal Southeast from Virginia to Florida and Texas. The genus name Zanthoxylum means yellow wood, and the species clava-herculis, the club of Hercules, names the stout, spiny, club-shaped trunk that is the tree's signature.
