Wisteria floribunda 'Multijuga'

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Japanese wisteria 'Kyushaku'

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Japanese wisteria 'Kyushaku' visionspictures.com
Japanese wisteria 'Kyushaku' visionspictures.com
Japanese wisteria 'Kyushaku' RHS

Synonyms

Wisteria floribunda 'Multijuga'
Wisteria floribunda 'Naga-noda'
Wisteria floribunda 'Longissima'
Wisteria floribunda 'Macrobotrys'
Wisteria longissima

Climber Wall Shrub
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A large, vigorous, deciduous climber about 9m tall, with twining stems and dark green leaves, divided into leaflets, that turn yellow in autumn. Exceptionally long, drooping racemes to 1m or more in length of fragrant, pea-like, lilac-tinged blue-purple flowers, a spectacular sight in full flower, are produced in late spring, often followed by bean-like velvety, blue-grey seed pods

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

8-12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity
10–20 years
Max Spread
wider than 8 metres
Max Height
8-12 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
South–facing or West–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
Fabaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Climbing
Potentially harmful
Harmful if eaten. Wear gloves and other protective equipment when handling. Pets: Harmful if eaten - for further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Wisteria are vigorous woody climbers with twining stems bearing pinnate leaves and long pendulous racemes of fragrant pea-like flowers in spring and early summer
Name Status
Accepted

How to Grow

Cultivation

A large, long-lived climber so choosing the right site is important, especially as this wisteria has very long flower racemes. It can be grown informally through large tree or over a very tall pergola, a high arch or against a house wall. Will grow in most soils that are moist but well-drained in sun or part shade. See wisteria cultivation for more advice

Propagation

Propagate by layering in spring, softwood cuttings from late spring to early summer, hardwood cuttings in winter, root cuttings in late winter or grafting in late winter

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Climber and wall shrubs
  • Wall side borders

Pruning

Prune twice a year for best results, see pruning wisteria for detailed advice

Pests

May be susceptible to aphids, glasshouse red spider mite, and scale insects including wisteria scale

Diseases

May be susceptible to honey fungus (rarely), phytophthora root rot, coral spot, fungal leaf spot, virus diseases, and powdery mildews