Magnolia acuminata

RHS Plant Profile
cucumber tree
cucumber tree visionspictures.com

Other common names

blue magnolia

Trees

Large tree, conical when young, spreading with age, up to 30m in height, with large, mid-green ovate leaves slightly downy on the underside. Small, pale green/yellow flowers with a metallic blue sheen bloom in late spring and early summer. The young fruits, when produced, resemble small cucumbers, which is how the tree got its common name

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

Higher than 12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity
20–50 years
Max Spread
wider than 8 metres
Max Height
Higher than 12 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered
Hardiness
H6

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Magnoliaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright, Spreading branched
Genus
Magnolia can be deciduous or evergreen trees or shrubs, with large, showy, often fragrant flowers, often opening before the leaves, and sometimes followed by colourful cone-like fruit
Name Status
Correct
Plant Range
Canada, USA

How to Grow

Cultivation

Grow in moist but well drained neutral to acid soil in full sun or light shade with shelter from cold winds. Late frost may damage the flower buds. For more information see magnolia cultivation

Propagation

Propagate by seed (tree/shrub) or propagate by softwood cuttings from late spring to early summer or semi-ripe cuttings from late summer to autumn

Suggested planting locations and garden types

  • Architectural
  • Cottage and informal garden
  • Flower borders and beds

Pruning

Pruning Group 1. See magnolia pruning

Pests

May be susceptible to scale insects, horse chestnut scale and capsid bug

Diseases

May be susceptible to coral spot, phytophthora, grey moulds, honey fungus, a virus or fungal leaf spot