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  • AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

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Angelica gigas

purple angelica

purple angelica

© RHS 2002

54 suppliers RHS Plant Shop from £6.99

  • Other common names purple angelica
    Korean angelica

  • Family Apiaceae

  • Genus Angelica are large biennials or herbaceous perennials, some monocarpic, with pinnately or palmately divided leaves and small white or purple flowers in large umbels

  • Details A. gigas is a robust biennial or short-lived perennial with pinnately divided leaves and erect, branched, purple stems bearing large umbels of deep purple flowers in late summer and early autumn

  • Plant range Japan, Korea

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

  • Partial Shade

  • Full Shade

  • Full Sun

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

  • Exposure Sheltered

Soil

  • Chalk

    Loam

  • Chalk

    Clay

  • MoistureMoist but well-drained, Poorly-drained

  • SoilLoam, Clay

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation The ideal position is a deep, moist, loamy soil in full or partial shade but it can tolerate drier conditions if mulched. A short-lived perennial.

Propagation Propagate by seed sown in a cold frame with good light, as soon as ripe.Exposure to light is required for germination. Move seedlings when young as older plants resent disturbance

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

How to care

Pruning Cut back after flowering

Pests Prone to slugs, snails, leaf miners and aphids

Diseases Susceptible to powdery mildews

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Angelica gigas

purple angelica

Buy from £6.99 at the RHS Plants Shop

Buy from £6.99 at the RHS Plants Shop

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