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TreesShrubs

Acer tschonoskii subsp. koreanum

A small, deciduous snake bark maple about 6m tall, with smooth green bark patterned with vertical stripes, and red stems fading to light tan when mature. Large leaves on reddish leaf stalks, are bright green above, paler beneath, with 5 to 7 deep lobes, turning fiery orange-red in autumn; clusters of small yellow spring flowers with the young leaves followed by pale brown winged fruits in autumn

Synonyms

Acer tschonoskii var. rubripes

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Ultimate height

4–8 metres

Time to ultimate height

10–20 years

Ultimate spread

2.5–4 metres

Clay

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or West–facing or South–facing

Exposure

Sheltered

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: Sapindaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Acer can be deciduous trees or large shrubs with paired, often palmately-lobed leaves and small flowers followed by characteristic winged fruits. Many have fine autumn colour, and some have ornamental stems
Name status: Correct
Plant range: NE China, Korea

How to grow

Cultivation

Grow in fertile, moist but well-drained soil in sun or partial shade, best in neutral to acid moist but well-drained soils, not suited to chalky soils. See tree cultivation for further advice

Propagation

Propagate by softwood cuttings, or by grafting

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Coastal
Mediterranean climate plants
Wildlife gardens

Pruning

Pruning group 1, only from late autumn to mid-winter

Pests

May be susceptible to aphids and scale insects, including horse chestnut scale

Diseases

May be susceptible to Verticillium wilt, Acer leaf scorch and honey fungus

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