Malus × zumi 'Professor Sprenger'

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crab apple 'Professor Sprenger'

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crab apple 'Professor Sprenger' Annaick Guitteny
crab apple 'Professor Sprenger' RHS
crab apple 'Professor Sprenger' RHS

Synonyms

Malus 'Professor Sprenger'
Malus toringo 'Professor Sprenger'
Malus sieboldii 'Professor Sprenger'

Plants for pollinators
Trees
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'Professor Sprenger' is a dense, compact, rounded, deciduous tree to about 7m, with mid-green foliage turning yellow in late autumn. The very fragrant flowers open white from pink buds in mid- and late spring, and are followed by large quantities of small, round, yellow and orange fruit that hang on into winter

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

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

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

Position

Full sun Partial shade
Aspect
North–facing or West–facing or East–facing or South–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

Fragrance Flower
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
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
Accepted

How to Grow

Cultivation

Grow in moderately fertile soil; will tolerate partial shade

Propagation

Propagate by chip budding in late summer. Grafting can be carried out in midwinter

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • City and courtyard gardens
  • Wildlife gardens
  • Flower borders and beds

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