Korean fir

Abies koreana

In other languages: Koreaanse zilverspar (Nederlands) · Sapin de Corée (Français)

Korean fir is a small, slow-growing conifer from the mountains of South Korea, including the volcano Hallasan on Jeju Island. It forms a dense, regular cone with short, blunt needles that are glossy dark green above and have two broad, silvery-white bands underneath. Its great asset is its cones: even on young trees they stand upright on the branches, a striking violet-blue and often beaded with white resin. Well-known cultivars include ‘Silberlocke’, whose needles curl upwards to show their silver undersides, and dwarf forms such as ‘Kohout’s Icebreaker’. Because it grows slowly and bears cones while young, it is one of the best firs for smaller gardens.

Updated on 9 October 2026

Light
Sun or partial shade
preferably some sun
Moisture
Normal
no wet feet
Legal basis
Sand or loam
acid to neutral
Hardiness
Fully hardy
down to -30 °C
Size
10 m
tall, 4 m wide

Key facts
Pruning months	March
Height	10 m
Native to Belgium	No, planted
Poisonous to people and pets	Not known to be poisonous

Identify

Korean fir: how do you recognise it?

Habit: Broad, regular cone; grows slowly and in time reaches 10 m tall and 4 m wide, usually much smaller in gardens.
Needles: Short and blunt, 1–2 cm, dense around the shoots; glossy dark green above, with two broad silvery-white bands beneath.
Cones: Cylindrical, about 5–7 cm, upright on the branches, violet-blue at first and later brown; they break up on the tree.
Bark: Smooth, grey to reddish brown, with small resin blisters on young trees.
Roots: A taproot with side roots; young trees establish more easily after planting than old ones.

Plants: April–May and September–October · Pruning: March

In your garden

Why grow it?

Bears striking violet-blue cones from a young age, standing upright on the branches like candles.
Grows slowly and stays small for a long time: suitable for smaller gardens, borders and large containers.
Evergreen: permanent dark green structure in winter, with a silver sheen from the needle undersides.
Fully hardy, even in severe Belgian winters.
Birds find shelter in the dense branches.
A fine specimen in a lawn, a heather garden or a Japanese-inspired garden.

Korean fir: where does it grow best?

Sun to partial shade; in full sun only on soil that does not dry out.
Cool, humus-rich sandy or loamy soil, acid to neutral; chalky soil and heavy, wet clay do not suit it.
Evenly moist but free-draining: it copes poorly with both drought and wet feet.
Preferably somewhat sheltered from cold, drying east winds, which can brown the needles in winter.
Allow 3–4 m of space; not too close to the house or a hedge, as it gets broad at the base.

Light: Sun and partial shade
Soil type: Sand or loam
Acidity: Acid or neutral
Moisture: Normal
Size: 10 m tall, 4 m wide
Hardiness: Hardy (to -30 °C)

Goes well with

Rhododendron: Also likes cool, acid soil and flowers in spring in front of the dark needles.
Heather: Low and colourful on the same acid soil, for a classic heather garden.
Japanese maple: Fine red or green leaves and autumn colour next to the neat cone.
Japanese forest grass: Soft, arching leaves at the base, in sun or partial shade.

Maintenance

Korean fir: when and how to plant it?

Plant in April–May and September–October.

Plant in April–May or September–October, when the soil is moist and not frozen.
Dig a hole twice as wide as the root ball and loosen the bottom of the hole.
Mix some leaf mould or conifer compost into the excavated soil; no lime and no fresh manure in the planting hole.
Set the tree at the same depth as it was in the pot, with the root collar at soil level, and firm the soil well.
Water in thoroughly straight away, then weekly in dry spells during the first year.
Spread a mulch of bark or pine needles around the base, but not against the trunk.

Care

Watering: For the first two years, water in dry spells, including a dry autumn. After that only in long droughts.
Feeding: Usually unnecessary. On poor soil, some compost or organic conifer feed in April.
Mulching: A layer of bark or leaf mould keeps the soil cool, moist and slightly acid.
Leader: Keep a single straight leader; if two leaders form, cut out the weaker one in March.
In a container: Young trees and dwarf forms can live for years in a large pot of ericaceous compost, but then need regular watering.

Tip: Plant it where the soil does not dry out and spread a layer of bark or leaf mould around the base every spring. That keeps the soil cool, moist and slightly acid, just as it likes.

Korean fir: when to prune it?

Pruning months: March.

When: Pruning is almost never needed: it naturally grows into a fine cone shape. At most, remove a double leader or a damaged branch in March.

How:

With two competing leaders, cut out the weaker one so that a single leader remains.
Remove dead or broken branches back to the trunk or a healthy side branch.
A side branch that is too long can be shortened to just above a side shoot with needles.
Never cut into bare wood without needles: a fir will not regrow from it.

Caution: Do not top the tree to keep it smaller: it would lose its cone shape for years.

Pruning: when and how · Pruning calendar and basic rules

Propagation

Seed: Collect seed in autumn from the cones as they break up. Keep it cold and moist in the fridge for a few weeks and sow in spring in seed compost; the seedlings grow slowly.
Grafting: Cultivars such as ‘Silberlocke’ do not come true from seed and are grafted by nurseries; this is difficult for amateurs.

Korean fir: how does it get through the winter?

Hardy to −30 °C.

Fully hardy to about −30 °C: no protection is needed in Belgium.
Late spring frost in April–May can damage the young shoots; it looks untidy, but the tree grows past it.
In a dry winter, water young trees and container plants on frost-free days: evergreens lose water in winter too.
Shake heavy snow off the branches so they do not break or bend out of shape.

Diseases and pests

Brown needles: After drought or cold, drying wind, or on wet, heavy soil. Water in dry spells, mulch and choose a free-draining spot.
Root rot: The tree yellows and dies back from the roots, especially on wet, heavy soil. Plant in a well-drained spot; affected trees rarely recover.
Woolly aphids: White, woolly tufts on shoots, needles and bark, with distorted young shoots. Blast them off with a strong jet of water and cut out badly affected twigs.
Spider mite: Dull grey-green, finely speckled needles and fine webbing in hot, dry summers. Spray the tree with water in dry weather and keep the soil moist.

Through the year

January: Rest. Shake heavy snow off the branches.
February: In a dry winter, water young trees on frost-free days.
March: Remove a double leader or damaged branches. Top up the mulch.
April: Planting. Compost on poor soil.
May: Planting. New shoots and young cones appear. Watch for late frost.
June: The cones turn violet-blue. Water in dry spells. Watch for woolly aphids.
July: Water in dry spells, especially young trees and containers.
August: In heat and drought, spray the needles against spider mite.
September: Planting. The cones ripen and break up.
October: Planting. Collect seed.
November: Water young trees in a dry autumn.
December: Rest. Shake snow off the branches.

You and this species

Did you know?

Fir cones break up on the tree: scales and seeds flutter down and only the bare central spike stays upright on the branch. That is why you rarely find whole cones under a fir.
In the wild it grows only in the mountains of South Korea, and it is on the Red List as an endangered species.
The silvery-white bands on the needle undersides give Korean fir its silver sheen when the wind lifts the branches.

Garden plants · All species