Malus tschonoskii

RHS Plant Profile

Chonosuki crab

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Other common names

pillar crab

Trees

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A vigorous, narrowly conical, deciduous tree to 12m in height, with ovate, glossy mid-green leaves turning bright orange, red and purple in autumn. Flowers white, from pink buds, followed by fruits to 2.5cm in width, greenish-yellow tinged red

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

8-12 metres

Max Spread

4-8 metres

Size

Time to Maturity: 10–20 years
Max Spread: 4-8 metres
Max Height: 8-12 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained or Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: West–facing or South–facing or North–facing or East–facing
Exposure: Exposed or 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): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Rosaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Columnar upright
Potentially harmful: Although generally edible when cooked, seeds contain toxins so these should be removed if you are considering eating the fruitusually grown as an ornamental shrub. see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Malus are small to medium-sized deciduous trees with showy flowers in spring and ornamental or edible fruit in autumn; some have good autumn foliage colour
Name Status: Correct
Plant Range: Japan

How to Grow

Cultivation

Grow in moderately fertile soil; will tolerate partial shade

Propagation

Propagate by seed sown in a seedbed in autumn or by chip budding in late summer. Grafting can be carried out in midwinter

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Architectural
Wildlife gardens

Pruning

Pruning group 1

Pests

May be susceptible to aphids, including woolly aphid and rosy apple aphid, fruit tree red spider mite, codling moth and other caterpillars

Diseases

May be susceptible to apple canker, apple scab, blossom wilt, brown rot, fireblight, honey fungus and powdery mildews