Regions / Middle South
Selecting plants suited to the Middle South climate is a key step to success.
Various initiatives have taken place to determine how well plants would withstand the cold winter temperatures (Plant Hardiness Zones) or when plants would start suffering from the heat (Plant Heat Zones).
The Middle South region lies in USDA Plant Hardiness Zone 7 and in AHS Heat Zones 3 through 8.
Set your borders aglow with this spectacular Agastache! 'Summer Sunset' features warm, sunset-orange hues all summer that will not fade in the summer's heat. Eye-popping, it will add color and a lovely spiky texture to your garden or containers. Hummingbirds will thank you for it.
Luminous, Agastache rugosa Golden Jubilee' (Korean Mint) is an upright, clump-forming perennial with attractive spikes of fragrant, tubular, lavender-blue flowers from midsummer to early fall. Adding lovely vertical lines to the landscape, they are held over the golden-green foliage of aromatic, lance-shaped leaves.
Compact and very floriferous, Agastache rugosa 'Little Adder' (Anise Hyssop) is a short, well-branched perennial with a remarkably long floral display, extending from late spring to fall. Masses of tubular, two-lipped lavender-blue flowers, held in showy spikes, are borne atop a bushy foliage clump of licorice-scented leaves.
Agastache rugosa (Korean Mint) is a short-lived, erect, herbaceous perennial with eye-catching purple flower spikes, 2-4 in. long (5-10 cm), held over a light-green aromatic foliage of stiff, toothed leaves. Edible, the leaves exude an anise scent when crushed.
Agastache rupestris features sweetly fragrant, tubular salmon-orange flowers with purplish calyxes all summer. Eye-popping, it provides an outstanding garden performance and adds color as well as a lovely spiky texture to the garden. Hummingbirds will thank you for it.
A fascinating North American Agave, Agave chrysantha (Golden Flowered Century Plant) is an evergreen, perennial succulent forming a pretty rosette of fleshy, sword-shaped, grey-green leaves which radiate gracefully from the center of the plant, giving it a neat and rounded shape. Deeply guttered, the leaves are lined with sharp spines along their edges and with a terminal spine.
Extremely cold hardy, Agave havardiana (Havard Agave) is an evergreen, perennial succulent forming a tight rosette of fleshy, broad, cupped, silver-gray leaves. Adding an attractive texture and interest year-round, the leaves are heavily lined with dark brown teeth along their margins and tipped with a wickedly sharp black terminal spine.
Resembling a large artichoke, Agave montana (Mountain Agave) is an evergreen, perennial succulent forming a rosette of fleshy, broad, upright, apple green leaves with large cinnamon-red teeth along the margins and a stout terminal spine. Adding intriguing beauty, the leaves carry on their lower surfaces the distinct imprints of the thorny leaf margins of the previous outer leaf-bud.
An unforgettable sight, Agave nickelsiae, previously named Agave ferdinandi-regis, is an evergreen, perennial succulent forming a striking compact rosette of stout, smooth and spineless, dark olive green leaves. Each leaf is beautifully adorned with ornamental white bud prints. Lacking teeth along the edges, they instead exhibit narrow white margins and are tipped by a contrasting black terminal spine.
Surprisingly cold hardy, Agave ovatifolia 'Frosty Blue' (Whale's Tongue Agave) is an evergreen, perennial succulent forming a solitary rounded rosette of thick, broad, distinctively cupped, gray to powdery-blue leaves. Adding interesting texture and interest year-round, the leaves are lined with small teeth along their margins and tipped with a dark gray terminal spine.
Surprisingly cold hardy, Agave ovatifolia (Whale's Tongue Agave) is an evergreen, perennial succulent forming a solitary rounded rosette of thick, broad, slightly cupped, gray to powdery-blue leaves. Adding interesting texture and interest year-round, the leaves are lined with small teeth along their margins and tipped with a long terminal spine.
Slow-growing, award-winning Agave parrasana (Cabbage Head Agave) is a compact evergreen, perennial succulent forming pretty rosettes of broad, closely packed and overlapping, pale blue-gray leaves, armed with gnarled teeth along the edges. The thick, rigid leaves are often irregularly dusted with a silvery blue coating, that shows impressive bud imprints and creates a lovely mottled appearance.
Highly sought after, Agave parryi var. truncata 'Huntington' (Artichoke Agave) is an evergreen, perennial succulent forming tight rosettes of thick, broad, short, pale blue-gray leaves with widely spaced small teeth and a wavy terminal spine. Dark reddish-brown on new leaves, the spines fade to gray on older leaves. Adding intriguing beauty, the leaves carry on their lower surfaces the distinct imprints of the thorny leaf margins of the previous outer leaf-bud.
A very hardy Agave from northeastern Mexico, Agave striata (Narrow Leaf Century Plant) is an evergreen, perennial succulent forming interesting rosettes of thin, gray-green leaves with a sharp, dark brown terminal spine. Radiating from the center, the leaves can be stiff or upward curving, and may add lovely purple tones in drought or cold.
Incredibly attractive, award-winning Agave victoriae-reginae is an evergreen, perennial succulent forming a perfectly spherical, solitary rosette of thick, smooth and spineless, dark green leaves. Each leaf is adorned with almost 'hand-painted' white margins and a small terminal spine.
Native to the southern United States, Mexico, the Caribbean and northern South America, Agaves are evergreen succulents with handsome rosettes of usually thick, rigid, fleshy leaves with marginal teeth and often a sharp terminal spine. They exist in a wide range of sizes, colors and offer an amazing array of leaf shapes.
One of the tallest, Ageratum houstonianum 'Blue Horizon' (Floss Flower) features fluffy round clusters of lavender to purplish-blue flowers resembling asters.