• 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

Rodgersia pinnata 'Superba'

rodgersia 'Superba'

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
  • Other common names rodgersia 'Superba'

  • Family Saxifragaceae

  • Genus Rodgersia are moisture-loving rhizomatous herbaceous perennials with handsome, often attractively tinted, leaves that may be pinnately or palmately divided, and small star-shaped flowers in large conical panicles in summer, remaining showy in fruit

  • Details 'Superba' is a clump-forming herbaceous perennial, with large, bronze-tinged, more-or-less pinnate leaves with leaflets to 20cm in length, and panicles to 50cm in length of small bright pink flowers

Characteristics

  • Foliage Deciduous

  • Habit Clump-forming

  • 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

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Clay

    Clay

  • Loam

    Loam

  • MoisturePoorly-drained, Moist but well-drained

  • SoilClay, Loam

  • pHNeutral, Acid, Alkaline

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in deep, fertile reliably moist soils in full sun or partial shade. Protect from cold drying winds

Propagation Propagate by division in spring

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

How to care

Pruning Cut back after flowering

Pests Slugs may damage young leaves

Diseases Generally disease free

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