• 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

Fritillaria acmopetala

pointed-petal fritillary

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 pointed-petal fritillary

  • Family Liliaceae

  • Genus Fritillaria are bulbous herbaceous perennials with lance-shaped or linear leaves and nodding bell-shaped or bowl-shaped flowers that may be solitary or in racemes or umbels

  • Details F. acmopetala is a bulbous perennial with erect stems to 30cm, bearing scattered, narrowly lanceolate leaves and 1-2 terminal, nodding, bell-shaped flowers 3-4cm long, pale green, tinged purple on the inner tepals

  • Plant range Turkey to Israel

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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)

    H4

Colour

Sunlight

  • Full Sun

  • Aspect South-facing

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Chalk

  • Loam

    Loam

  • Sand

    Sand

  • MoistureWell-drained

  • SoilChalk, Loam, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0-0.1 metre

  • Time to ultimate height 2-5 years

How to grow

Cultivation A tolerant species suitable for a sunny border or rock garden. Needs fertile, well-drained soil and full sun

Propagation Propagate by seed sown in autumn in a cold frame. Expose to winter cold until germination in spring, then transfer to a cold greenhouse. Grow on for 2 years in containers. Divide offsets, or collect and sow bulbils in late summer

Suggested planting locations and garden types Flower borders and beds City & Courtyard Gardens Cottage & Informal Garden Patio & Container Plants Rock Garden

How to care

Pruning Cut back when foliage turns yellow at the end of the season

Pests Prone to attack by lily beetles and slugs

Diseases Can be susceptible to lily disease (Botrytis elliptica) and a virus

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.