Magnolia stellata

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star magnolia RHS 2002
star magnolia visionspictures.com
star magnolia visionspictures.com

Other common names

starry magnolia

Synonyms

Magnolia halleana
Magnolia kobus var. stellata

Shrubs
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A slow-growing medium-sized deciduous shrub of broadly rounded habit. Leaves narrowly obovate. Flowers white, to 10cm in width, with up to 18 narrowly oblong, spreading white tepals, in early spring

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

2.5-4 metres

Size

Time to Maturity
10–20 years
Max Spread
2.5-4 metres
Max Height
1.5-2.5 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
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
Magnoliaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
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
Japan

How to Grow

Cultivation

Grow in moist but well-drained neutral to acid soil in full sun or part shade with shelter from cold winds. Late frosts may damage flower buds. Will grow in alkaline soil that is moisture retentive. Further magnolia cultivation advice

Propagation

Propagate by seed, semi-hardwood and softwood cuttings

Suggested planting locations and garden types

  • Cottage and informal garden
  • Architectural
  • City and courtyard gardens
  • Patio and container plants
  • Low Maintenance
  • Cut flowers

Pruning

Magnolia pruning should be carried out in midsummer when in full leaf

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