• 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

Tsuga canadensis

eastern hemlock

eastern hemlock

© RHS

  • Other common names eastern hemlock
    common hemlock

    Canada hemlock
    spruce hemlock
    white hemlock

    see more
  • Family Pinaceae

  • Genus Tsuga are evergreen trees, broadly conical in habit, with a drooping leading shoot,linear leaves which are white beneath, and small ovoid cones

  • Details T. canadensis is a vigorous, broadly conical evergreen tree to 25m tall, with deeply furrowed, purplish-grey bark and short, dark green, needle-like leaves, white beneath, borne in two ranks on slender shoots forming flat sprays of foliage; ovoid brown cones 2cm long ripen in autumn

  • Plant range North America

Characteristics

  • Foliage Evergreen

  • 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)

    H7

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Loam

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilSand, Loam

  • pHAcid, Neutral

Size

  • Ultimate height Higher than 12 metres

  • Ultimate spread 4-8 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Grow in humus-rich moist but well-drained acid to slightly alkaline soil in full sun or part shade, with shelter from cold, drying winds; very shade tolerant

Propagation Propagate by seed in containers in a cold frame in spring; root semi-ripe cuttings in late summer or early autumn

Suggested planting locations and garden types Low Maintenance Architectural

How to care

Pruning No pruning required

Pests Generally trouble free

Diseases May be subject to butt rot fungus and root rot fungus

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