• AGM plants

    AGM plants have been through a rigourous 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

Gillenia trifoliata

Bowman's root

AGM plants

AGM plants have been through a rigourous 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
Bowman's root

© � RHS 2001

  • Other common names Bowman's root
    False ipecac

    Indian hippo
    Indian physic
    Western dropwort

    see more
  • Genus Gillenia are rhizomatous perennials with palmately divided leaves and lax panicles of star-shaped white or pale pink flowers

  • Family Rosaceae / Rosaceae

  • Species G. trifoliata is a rhizomatous perennial with reddish stems bearing small, 3-lobed leaves and open sprays of starry white flowers 3-4cm in width, with contrasting red calyces

  • Plant range NE USA & Canada

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)
    Old hardiness ratings

    While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.

    • H1 - Requires heated glass
    • H2 - Requires unheated glass
    • H3 - Hardy outside in some regions of the UK
    • H4 - Hardy throughout the UK
    • H1 + H3 - Requires heated glass but may be grown outside in summer

    For full details of the hardiness ratings see

    see more

    H7

Colour

Sunlight

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Chalk

    Sand

  • Chalk

    Loam

  • Chalk

    Clay

  • MoistureMoist but well-drained

  • SoilSand, Loam, Clay

  • pHAcid, Neutral

Size

  • Ultimate height

    0.5-1 metres

  • Ultimate spread

    0.1-0.5 metres

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Grow in fertile, slightly acid to neutral, moist but well-drained soil in partial shade. Can tolerate full sun if shaded in the hottset part of the day. May need staking

Propagation Propagate by seed in pots in a cold frame in winter or propagate by division in spring or autumn

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

How to care

Pruning No pruning required

Pests Generally pest free

Diseases Generally disease free

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