• 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

Colutea arborescens

common bladder senna

© Mike L. Grant 1998
  • Other common names common bladder senna
    bladder senna

    tree colutea

    see more
  • Synonyms Colutea brevialata

  • Family Fabaceae

  • Genus Colutea are deciduous shrubs with pinnate leaves and short axillary racemes of pea-like yellow or deep orange flowers in summer, followed by translucent, inflated fruits

  • Details C. arborescens is a vigorous shrub to 3m, with pale green pinnate leaves and yellow flowers 2cm across, followed by bladder-like fruits to 8cm in length

  • Plant range S Europe

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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

Sunlight

  • Full Sun

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

  • Exposure Exposed

Soil

  • Loam

    Loam

  • Sand

    Sand

  • Clay

    Clay

  • Chalk

    Chalk

  • MoistureWell-drained

  • SoilLoam, Sand, Clay, Chalk

  • pHAlkaline, Neutral, Acid

Size

  • Ultimate height 2.5-4 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Will grow in poor dry soil in exposed conditions, but likes full sun

Propagation Propagate by seed or softwood cuttings

Suggested planting locations and garden types Low Maintenance Drought Resistant Cottage & Informal Garden

How to care

Pruning Pruning group 1

Pests Generally pest free

Diseases Generally disease free

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