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Korean fir

Jan Mehlich (Lestat) / Wikimedia Commons - CC BY-SA 3.0

Korean fir

Abies koreana

Korean fir (Abies koreana) is a compact, slow-growing evergreen fir from the high mountains of southern South Korea, where it is confined to cool, misty summits, most famously Hallasan on Jeju Island. In gardens it makes a dense, neat, conical small tree, usually 15 to 30 feet over many years, with short broad needles that are dark green above and marked beneath with two vivid white bands, so the whole tree flashes silver when the wind turns the foliage. Its signature is the cones: erect, cylindrical, and an intense violet-blue when young, and unusually it bears them freely even on young plants only a few feet tall, which is why it is one of the most collected ornamental firs and holds the RHS Award of Garden Merit. The honest catch is that it is a true mountain conifer: it wants cool summers, steady moisture, and acidic, well-drained soil, and it resents heat, drought, and urban pollution, so it disappoints in hot lowland gardens south of about USDA zone 7. It is also Endangered in the wild, where warming is widely blamed for pushing its shrinking high-altitude stands, most visibly on Jeju, further up the mountains.

Climate fit: narrow (21/100)

Focal point

Structure

Light

Full sun / Part shade

Water

Consistent moisture

Mature size

15-30 ft tall · 12 ft apart

Hardy in zones

5a-7b

very cold to cold winters

Native in Illinois

No

Related products

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.

Now

Zone 6b

Plotwright

USDA Zone 6b

-5°F to 0°F

Well-suited

2050

2100

Zone 7a

Plotwright

0°F to 5°F

Well-suited

In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.

✓

Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.

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Where this plant fits

Suitable across 30 ecoregions - 17 climate-resilient through 2070 · 5 suited today · 8 newly possible by 2070. Best matches first.

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What it needs

Conditions

Light

Full sun / Part shade

Water

Consistent moisture

Spacing

12 ft

Habit

Compact, slow-growing evergreen conifer with a dense, neat, conical to broadly pyramidal crown, in gardens usually 15 to 30 feet tall (to about 50 feet in ideal cool conditions, and 33 to 59 feet in the wild) and 6 to 12 feet wide. Growth is slow, roughly 4 to 6 inches a year. The short needles are 0.4 to 0.8 inches long, broad and blunt, radiating densely around the shoots, dark green above and marked beneath with two broad, vivid white stomatal bands. The erect cones are cylindrical, about 2 to 3 inches (2 to 3 inches) long, an intense violet-blue when young and ripening to brown, and are borne freely even on young trees only a few feet tall. Bark is smooth and grey-brown with resin blisters.

Care tips

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Treat it as a mountain tree: give it a cool, humid site with acidic to neutral, evenly moist, well-drained soil, and keep the root zone mulched and never bone-dry.

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It struggles in the heat and humidity of hot lowland gardens. If you are below or south of USDA zone 7, expect disappointment and choose a more heat-tolerant conifer instead.

•

Plant in full sun where summers are cool, or give light shade and wind shelter in the warmer or more exposed parts of its range.

Lifecycle

Planting

Plant in autumn or early spring as a container-grown or balled-and-burlapped young tree into cool, acidic to neutral, evenly moist but well-drained soil, in full sun to light shade with shelter from cold drying winds. Choose a cool, humid site: Korean fir is a mountain conifer and resents hot, dry, exposed positions.

Transplanting

Young trees move reasonably well if the rootball is kept moist and the tree is watered through its first summers. It is fairly shallow-rooted, so firm the soil and stake against wind rock while it establishes; older trees do not transplant well.

Early growth

Slow-growing, about 4 to 6 inches a year. Keep the root zone cool, moist, and mulched and never let it dry out; drought and summer heat are the commonest causes of failure outside its native climate. Little pruning is needed beyond removing any competing second leader.

Maturity

Reaches 15 to 30 feet over several decades and is long-lived on cool, moist sites. Monoecious: it carries both pollen cones and the erect violet-blue seed cones on the same tree, and unusually it begins coning while still small, so the ornamental display starts young. The ripe cones disintegrate on the branch, shedding winged seeds and leaving an upright central spike.

Propagation

Grown from seed collected from ripe autumn cones and given a cold, moist stratification before spring sowing; germination and early growth are slow. Named garden cultivars (such as 'Silberlocke') are grafted rather than raised from seed, since they do not come true.

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.

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American arborvitae

A dense, conical-to-narrow-pyramidal evergreen tree native to eastern and central North America, prized as a screening and foundation conifer. Flat, fan-like sprays of scale-like, aromatic yellow-green foliage clothe the tree from the ground up, and red-brown bark exfoliates on mature trunks. Wild trees can reach 40 to 60 feet but cultivated plants typically stay near 20 to 30 feet; small urn-shaped cones and dense evergreen cover make it valuable food and shelter for birds.

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The only native U.S. holly with both spiny green leaves and bright red berries - an upright, pyramidal, broadleaf evergreen tree that slowly matures to 15 to 30 feet in cultivation (to 50 feet in the wild). Thick, leathery, deep green leaves bear spiny marginal teeth, and pollinated female trees carry showy red-to-orange drupes that ripen in fall and persist through winter as bird food. This is the classic "Christmas holly" of wreaths and decorations.

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Tree

Full sun / Part shade

Educator packet

Plant packet

Korean fir educator packet

Korean fir (Abies koreana) is a compact, slow-growing evergreen fir from the high mountains of southern South Korea, where it is confined to cool, misty summits, most famously Hallasan on Jeju Island. In gardens it makes a dense, neat, conical small tree, usually 15 to 30 feet over many years, with short broad needles that are dark green above and marked beneath with two vivid white bands, so the whole tree flashes silver when the wind turns the foliage. Its signature is the cones: erect, cylindrical, and an intense violet-blue when young, and unusually it bears them freely even on young plants only a few feet tall, which is why it is one of the most collected ornamental firs and holds the RHS Award of Garden Merit. The honest catch is that it is a true mountain conifer: it wants cool summers, steady moisture, and acidic, well-drained soil, and it resents heat, drought, and urban pollution, so it disappoints in hot lowland gardens south of about USDA zone 7. It is also Endangered in the wild, where warming is widely blamed for pushing its shrinking high-altitude stands, most visibly on Jeju, further up the mountains.

Scientific name

Abies koreana

Plant type

tree

Hardiness

5a-7b

Light

full-sun, part-shade

Moisture

consistent

Spacing

144 inches