• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Staphylea colchica

ivory-flowered bladdernut

  • Other common names ivory-flowered bladdernut

  • Family Staphyleaceae

  • Genus Staphylea are deciduous shrubs or small trees producing hanging clusters of bell- or cup-shaped, white, cream or pink flowers, followed by bladder-like, two- or three-lobed fruit

  • Details S. colchica is an upright, deciduous shrub, with glossy leaves of three or five leaflets. In late spring it bears small, white, fragrant, bell-shaped flowers in hanging clusters up to 12cm long. They are followed by large, greenish-white, inflated fruit

  • Plant range Caucasus

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Flower

  • 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)

    H5

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or North-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Sand

    Sand

  • Clay

    Clay

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 2.5-4 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Easy to grow in any moist, well-drained soil in sun or semi-shade

Propagation Propagate by seed sown in containers in a cold frame in autumn, or by softwood cuttings in early summer or semi-ripe cuttings in midsummer, both with bottom heat

Suggested planting locations and garden types Low Maintenance Flower borders and beds Cottage & Informal Garden

How to care

Pruning Pruning group 1 or pruning group 2

Pests Generally trouble free

Diseases Generally trouble free

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