Malus ioensis

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prairie crab

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A deciduous tree, with scaly, peeling mature bark, and oval-shaped green leaves with downy undersides. Fragrant white flowers flushed with pink are produced in spring, followed in autumn by small green fruits. Leaves turn shades of orange and red in autumn

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 or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–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)
H4

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
Columnar upright, 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
Correct

How to Grow

Cultivation

Grow in fertile, deep, moist, loamy soil in a sunny position; will tolerate partial shade

Propagation

Propagate by seed, by chip budding in late summer, or by grafting in mid-winter

Suggested planting locations and garden types

  • Cottage and informal garden
  • Wildlife gardens
  • Low Maintenance

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, rust diseases, blossom wilt, brown rot, fireblight, honey fungus and powdery mildews. This species has some resistance to apple scab