• 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

Sanguinaria canadensis f. multiplex 'Plena' (d)

Double red puccoon

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
Double red puccoon

© � RHS 2003

  • Other common names Double red puccoon

  • Synonyms Sanguinaria canadensis 'Flore Pleno'
    Sanguinaria canadensis 'Plena'

  • Genus Sanguinaria are rhizomatous herbaceous perennials with kidney-shaped, lobed blue-green leaves and cup-shaped white flowers opening with the leaves in spring

  • Family Papaveraceae / Papaveraceae

  • Species 'Plena' is a rhizomatous perennial to 20cm in height, with grey-green, kidney-shaped leaves enlarging to 15cm in width after flowering. Flowers solitary, 7cm in width, white, fully double

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

    H5

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Exposed

Soil

  • Chalk

    Chalk

  • Chalk

    Loam

  • Chalk

    Sand

  • Chalk

    Clay

  • MoistureMoist but well-drained

  • SoilChalk, Loam, Sand, Clay

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height

    0.1-0.5 metres

  • Ultimate spread

    0.1-0.5 metres

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Grow in a moderately fertile, moist but well-drained soil that does not dry out; best in full sun or partial shade. Usually needs support and the rhizomes can spread and become invasive so site with care

Propagation Propagate by division in spring or autumn

Suggested planting locations and garden types Flower borders and beds Underplanting of Roses and Shrubs Cottage & Informal Garden Rock Garden

How to care

Pests Slugs may be a problem

Diseases Generally disease free

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