• 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

Ligularia przewalskii

Przewalski's golden ray

Przewalski's golden ray

© RHS 2002

  • Other common names Przewalski's golden ray

  • Synonyms Senecio przewalskii

  • Family Asteraceae

  • Genus Ligularia are robust herbaceous perennials, with large, often attractively lobed leaves and yellow or orange, daisy-like flower-heads in terminal racemes or branching clusters

  • Details L. przewalskii is a vigorous perennial to 2m in height, with erect black stems bearing large leaves palmately cut into jagged lobes, and slender racemes with of small yellow flower-heads in late summer

  • Plant range NW China

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

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Clay

    Clay

  • Loam

    Loam

  • MoisturePoorly-drained

  • SoilClay, Loam

  • pHNeutral, Acid, Alkaline

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in deep, fertile, reliably moist soil in full sun but with some shelter from midday sun. Protect from strong drying winds

Propagation Propagate by division in spring or after flowering

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

How to care

Pruning Cut back after flowering

Pests May be damaged by slugs and snails

Diseases Generally disease free

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