Malus 'Mokum'

RHS Plant Profile
crab apple 'Mokum'

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A deciduous tree up to 8m tall with and upright, oval crown. Leaves emerge purplish bronze-red in spring before turning bronze to purple-green. Flowers up to 4cm across are a rose-red colour, darker in bud and followed by small orange-red or yellow fruits up to 2cm long

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand, Chalk

Max Height

4-8 metres

Max Spread

4-8 metres

Size

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

Growing Conditions

Clay Loam Sand Chalk
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing or North–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
Spreading branched
Potentially harmful
Fruit are ornamental - not to be eaten
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
Accepted

How to Grow

Cultivation

Grow in moderately fertile soil in a sunny position; will tolerate partial shade

Propagation

Propagate by sowing seed in a seedbed in autumn, by chip budding in late summer or grafting in midwinter

Suggested planting locations and garden types

  • Cottage and informal garden
  • Wildlife gardens
  • City and courtyard gardens
  • Flower borders and beds
  • Edible fruit

Pruning

Pruning group 1

Pests

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

Diseases

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