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TreesConifers

Pinus koraiensis

Korean pine

An evergreen coniferous tree, capable of reaching 30m (100ft) high with a trunk 1.5m (5ft) in diameter, when mature. The bark is smooth and grey-brown becoming grey-black and peeling in patches over time. The tree forms a broadly conical canopy, with the needles produced in groups of five at the tips of short stems. The needles are approximately 13cm (5in) long and triangular in cross section, being dark green on the outer face and whitish green on the two inner faces. The cones appear in groups of up to 5 and are oval to cylindrical in shape and brown in colour when mature. The cones of this species are one of the main sources of pine nuts which are harvested for commercial use.

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Ultimate height

Higher than 12 metres

Time to ultimate height

20–50 years

Ultimate spread

Wider than 8 metres

Loam

Sand

Moisture

Well–drained

pH

Acid, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing

Exposure

Exposed or Sheltered

Drought resistance

Yes

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Pinaceae
Native to the UK: No
Foliage: Evergreen
Habit: Columnar upright
Genus: Pinus can be shrubs or large, evergreen trees, some species with attractive bark, developing an irregular outline with age and bearing long needle-like leaves in bundles of 2, 3 or 5; conspicuous cones may fall or remain on the tree for years
Name status: Correct
Plant range: E Asia

How to grow

Cultivation

Grow in well-drained, preferably neutral to acidic soil in full sun

Propagation

Propagate by seed, by semi-ripe cuttings, by hardwood cuttings, or by grafting, see: trees and shrubs from seed

Suggested planting locations and garden types

Architectural
Cottage and informal garden
Low Maintenance

Pruning

No pruning required

Pests

May be susceptible to adelgids, conifer aphid, sawfly larvae, and pine shoot moth

Diseases

May be susceptible to honey fungus and needle cast diseases

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