Regions / Coastal South

 

Southern states, Southern gardening, Southern garden, Southern Climate, Southern Region

Coastal South

Selecting plants suited to the Coastal 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 Coastal South region lies in USDA Plant Hardiness Zone 9 and in AHS Heat Zones 9 through 11.

If you know your hardiness zone and heat zone, find the best plants or exciting garden ideas for your geographic area.




Alcea rosea 'Spring Celebrities White' (Hollyhock)

Noted for its shorter stature, Alcea rosea 'Spring Celebrities White' (Hollyhock) is a short-lived perennial which produces sturdy spikes of large, double, pristine white flowers. Blooming from mid to late summer, the striking flowers are arranged all round the spike and bloom from the bottom up. An old garden favorite, this hollyhock is perfect for the sunny border or containers. Great for small gardens too!

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Allium 'Globemaster' (Ornamental Onion)

Boasting of of the biggest flower heads, multiple award-winner Allium 'Globemaster' is a striking ornamental onion with its inflorescence consisting of dozens of small star-shaped violet flowers forming a 10 inch wide (25 cm) globe-shaped cluster!

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Allium 'Millenium' (Ornamental Allium)

A butterfly magnet, Allium 'Millenium' is a bulbous perennial with profuse, large, rounded umbels, 2 in. across (5 cm), tightly packed with bright rosy purple flowers. Blooming in mid to late summer, the luminous flowers are borne on sturdy, upright stems just above the attractive foliage clump of onion-scented, grass-like, glossy deep green leaves, which remain attractive all season long. The flowers are both long lasting (up to 4 weeks) and excellent as cut flowers. This Allium is not bothered by heat and reseeding is much less a problem than in other alliums.

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Allium 'Summer Beauty' (Ornamental Allium)

Allium 'Summer Beauty' is a bulbous perennial with charming, rounded umbels, 2 in. across (5 cm), packed with up to 30 soft lavender-pink, bell-shaped flowers. Blooming in mid- to late summer, the luminous flowers are borne on sturdy, upright stems above a foliage of onion-scented, strap-shaped leaves, which remains attractive all season long.

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Allium caeruleum (Ornamental Onion)

Spectacular and refreshing! Prized for its true blue color, Allium caeruleum provides interesting ornamental value in the garden in late spring to early summer.

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Allium cernuum (Lady's Leek)

Native to North America, Allium cernuum is a lovely summer flowering bulb with loose, nodding umbels of tiny bell-shaped, pink to lilac or even white flowers. Each erect stem produces up to 30 flowers!

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Allium fistulosum (Bunching Onion)

Great for spicing up salads or edging borders! Bunching Onions (Allium fistulosum) are cultivated both for their culinary uses and their ornamental value.

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Allium flavum (Yellow-Flowered Garlic)

Blooming in late spring to early summer, this charming Allium is fully hardy and thrives in dry soils. This beauty naturalizes easily and will come back year after year!

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Allium giganteum (Ornamental Onion)

Dramatic border background plant! Perhaps the tallest of the ornamental onions, Allium giganteum is a striking and bold addition to the garden with its star-shaped, tiny lilac-purple flowers forming a 5-6 in. wide (12-15 cm) globe-shaped cluster.

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Allium hollandicum 'Purple Sensation' (Ornamental Onion)

A favorite of many gardeners, multiple award-winner Allium 'Purple Sensation' is a striking ornamental onion with its inflorescence consisting of dozens of small, star-shaped, rich violet-lilac flowers, forming perfectly round flowerheads, 3 in. wide (8 cm). They are borne atop sturdy stalks, which arise from a group of 6 to 8 handsome, blue-green, straplike leaves.

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Allium karataviense 'Ivory Queen' (Turkestan Onion)

An unusual, ivory-white dwarf ornamental onion, Allium karataviense 'Ivory Queen' (Turkestan Onion) is quite attractive with its elegant globe-shaped clusters, 5 in. wide (12 cm), of starry white flowers nestled in a beautiful foliage consisting of wide and recurved, gray-green leaves, slightly red edged. A very ornamental ensemble!

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Allium karataviense (Turkestan Onion)

Extremely decorative and shade tolerant! This allium is also one of the best for containers.

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Allium moly (Lily Leek)

Would you have ever thought that Alliums could display clusters of golden yellow flowers? Allium moly ((Lily Leek) does, and it does it superbly and profusely!

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Allium neapolitanum (Ornamental Onion)

Fragrant, sparkling flowers! Allium neapolitanum is a beautiful, profusely-flowering ornamental onion with sweetly-scented clusters of white, star-shaped flowers forming umbels atop narrow, green leaves.

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Allium nigrum (Ornamental Onion)

Attractive flat-topped creamy flower heads! Despite its name, Allium nigrum is a white flowering onion, featuring creamy-white or pale lilac flat clusters of starry silvery florets with a green center.

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Allium oreophilum (Pink Lily Leek)

Allium oreophilum (Pink Lily Leek) is a compact, hardy bulb with delicate, loose umbels of rosy reddish-pink, star-shaped flowers adorned with darker midveins. The blossoms are mounted on wiry gray-mauve stems and rise above narrow, semi-erect, gray-green leaves.

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Allium Rosenbachianum (Showy Persian Onion)

Blooming about two weeks earlier than the other large Alliums, Allium rosenbachianum (Showy Persian Onion) is a bulbous perennial with large, rounded umbels, 4 in. across (10 cm), packed with up to 50 deep-purple, star-shaped flowers adorned with prominent, white stamens.

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Allium roseum (Rosy Garlic)

Alium Roseum is a beautiful sight with its elegant, exquisitely-scented clusters of pale to rich pink, star-shaped flowers forming umbels up to 3 in. wide (7 cm).

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Allium schoenoprasum (Chives)

Great for spicing up salads or edging borders! Chives (Allium schoenoprasum) are cultivated both for their culinary uses and their ornamental value.

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Allium schubertii (Ornamental Onion)

Grown for its unique and attractive display of loose, star-shaped, rose-purple flowers that bloom in giant, spherical umbels in late spring.

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Allium senescens (German Garlic)

Allium senescens (German Garlic) is a bulbous herbaceous perennial which forms a tuft of twisted, grassy-looking, green leaves and produces up to 30 fragrant round balls of soft pink-lilac flowers atop upright stems in mid to late summer. Lasting for several weeks, they attract butterflies and hummingbirds.

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Allium sphaerocephalon (Drumstick Allium)

Adds interest and movement to the border with its dense egg-shaped flower heads atop straight and slender stems, delicately turning from green to purple as they mature.

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Allium unifolium (Oneleaf Onion)

Allium Unifolium (Oneleaf Onion) is a compact perennial with delicate clusters of up to 30 fairly large, star-shaped, satiny, rose-pink flowers. The blossoms are borne atop the foliage of short gray-green basal leaves. Blooming in late spring to early summer, this charming Allium spreads freely in the garden without being a pest.

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Allium ursinum (Wild Garlic)

More tolerant of part shade conditions than most Aliums, Allium ursinum (Wild Garlic) is a vigorous, bulbous perennial with loose umbels, 2 in. across (5 cm), counting up to 20 star-shaped white flowers. The blossoms are borne on erect, leafless stems and rise above pairs of elliptic, linear, deep green basal leaves. If bruised or crushed, the foliage exudes a strong onion or garlic aroma.

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