• 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

Parrotia persica 'Vanessa'

Persian ironwood 'Vanessa'

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
Persian ironwood 'Vanessa'

© RHS

  • Other common names Persian ironwood 'Vanessa'

  • Family Hamamelidaceae

  • Genus Parrotia are deciduous trees with broadly ovate leaves which colour well in autumn, and small but abundant red flowers in late winter and early spring

  • Details 'Vanessa' is an small, upright tree with attractive, flaking bark and small red flowers on bare stems in late winter and early spring. The young foliage is red and bronze turning green for summer then producing spectacular autumn colour with shades of red, orange and purple

Characteristics

  • Foliage Deciduous

  • Habit Columnar/Upright

  • 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 Sheltered or Exposed

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Sand

    Sand

  • Loam

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilChalk, Clay, Sand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 8-12 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Grow in a well-drained or moist but well-drained soil in full sun for the best colour; makes a good, small, specimen tree

Propagation Propagate by semi-hardwood or softwood cuttings

Suggested planting locations and garden types Low Maintenance Architectural City & Courtyard Gardens Cottage & Informal Garden

How to care

Pruning Pruning group 1

Pests Generally pest free

Diseases Generally disease free

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