• 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

Waldsteinia ternata

Siberian waldsteinia

Siberian waldsteinia

© RHS 2002

  • Other common names Siberian waldsteinia
    ternate waldsteinia

  • Family Rosaceae

  • Genus Waldsteinia are rhizomatous herbaceous or semi-evergreen perennials forming clumps of palmately divided leaves, with saucer-shaped yellow flowers in loose clusters in late spring and early summer

  • Details W. ternata is a semi-evergreen perennial with leaves palmately divided into three broad leaflets, and bright yellow flowers 1.5cm across

  • Plant range Europe, N Asia

Characteristics

  • Foliage Semi-evergreen

  • Habit Mat 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)

    H7

Colour

Sunlight

  • Partial Shade

  • Full Shade

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

  • Exposure Sheltered

Soil

  • Clay

    Clay

  • Loam

    Loam

  • Chalk

    Chalk

  • Sand

    Sand

  • MoistureMoist but well-drained, Well-drained, Poorly-drained

  • SoilClay, Loam, Chalk, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height Up to 10 cm

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in any moderately fertile soil in full or partial shade; can be invasive

Propagation Propagate by division in early spring

Suggested planting locations and garden types Garden Edging Ground Cover Underplanting of Roses and Shrubs

How to care

Pruning No regular pruning required

Pests Generally pest free

Diseases Generally disease free

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