• 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

Primula vialii (So)

Vial's primrose

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
  • Other common names Vial's primrose
    orchid primrose

    red-hot poker primrose

    see more
  • Synonyms Primula littoniana
    Primula viali

  • 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

  • Details P. vialii is a rosette-forming herbaceous perennial to 40cm, with hairy, oblong-lanceolate leaves and erect stems with a terminal conical spike of light violet flowers 1cm in width, opening from red buds

  • Plant range 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)

    H5

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Loam

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam

  • pHAcid, 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 deep moist or moist but well-drained neutral to acid, humus-rich soil in full sun or partial shade

Propagation Propagate by division in early spring or propagate by seed sown from autumn to spring

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

How to care

Pruning Cut back after flowering

Pests May be attacked by aphids, vine weevil, slugs, leaf and bud eelworms and glasshouse red spider mite

Diseases Generally disease free

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