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  • 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
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Primula 'Guinevere' (Pr/poly)

polyanthus 'Guinevere'

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
Sold by 28 nurseries

  • Other common names polyanthus 'Guinevere'

  • Synonyms Primula 'Garryarde Guinevere'
    Primula 'Garryard Guinevere'

  • Family Primulaceae

  • Genus Primula are herbaceous or semi-evergreen perennials, forming a basal rosette of simple leaves, with salver-shaped or bell-shaped flowers which may be solitary or carried in an umbel or in whorls on an erect stem

  • Horticultural Group Primula Polyanthus - placeholder for friendly description

  • Details 'Guinevere' is a semi-evergreen perennial to 12cm, with a rosette of obovate, purplish-bronze leaves and umbels of purplish-pink, yellow-eyed flowers 3-4cm in width

Characteristics

  • Foliage Semi-evergreen

  • 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

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilChalk, Clay, Loam, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height Up to 10 cm

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in moderately fertile, moist but well-drained, humus-rich soil

Propagation Propagate by seed or division in autumn and early spring

Suggested planting locations and garden types Banks and Slopes Flower borders and beds Underplanting of Roses and Shrubs Coastal Cottage & Informal Garden City & Courtyard Gardens Patio & Container Plants Rock Garden

How to care

Pruning Cut back after flowering

Pests May be attacked by aphids, glasshouse red spider mite, leafhoppers, vine weevil and slugs

Diseases May be subject to grey moulds, primula brown core and a virus

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