• 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

Metasequoia glyptostroboides

dawn redwood

dawn redwood

© RHS 2000

  • Other common names dawn redwood

  • Family Cupressaceae

  • Genus Metasequoia is a large deciduous tree with reddish-brown fibrous bark and soft, pale green linear leaves arranged in two ranks on the shoots, colouring beautifully in autumn

  • Details M. glyptostroboides is a vigorous deciduous conifer making a large, narrowly conical tree to 25m, with flat sprays of narrow, pale green leaves that turn brownish-pink and yellow in autumn. Cones and flowers insignificant

  • Plant range C China

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)

    H7

Colour

Sunlight

  • Full Sun

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

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Chalk

  • Chalk

    Clay

  • Chalk

    Sand

  • Chalk

    Loam

  • MoistureMoist but well-drained, Poorly-drained

  • SoilChalk, Clay, Sand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height Higher than 12 metres

  • Ultimate spread wider than 8 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Grow in moist but well-drained soil. Tolerant of waterlogged soils. Excellent specimen tree grows quickly to considerable height

Propagation Propagate by seed, hardwood or semi-hardwood cuttings

Suggested planting locations and garden types Low Maintenance

How to care

Pruning No pruning required

Pests Generally pest free

Diseases Generally disease free

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