Fritillaria thunbergii

RHS Plant Profile
Thunberg fritillary

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A bulbous perennial, to 60cm tall, with whorls of narrow leaves, the upper leaves forming tendrils. The nodding, bell-shaped spring flowers, usually around four in total, are about 2.5cm long and a pale yellow-cream colour with purplish-brown spots or squares

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0-0.1 metre

Size

Time to Maturity
2–5 years
Max Spread
0-0.1 metre
Max Height
0.5-1 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Sheltered
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 & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Liliaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Potentially harmful
Ornamental bulbs, not to be eaten. Wear gloves and other protective equipment when handling. Pets: Ornamental bulbs, not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
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
Name Status
Correct
Plant Range
C Asia

How to Grow

Cultivation

Prefers a moderately fertile, very well-drained soil and is intolerant of wet when dormant

Propagation

Propagate from seed, sown in pots in a cold frame in autumn. Needs exposure to winter cold for germination in spring. Divide offsets in late summer

Suggested planting locations and garden types

  • Patio and container plants
  • Rock garden

Pruning

No pruning required

Pests

May be susceptible to slugs and lily beetle

Diseases

Generally disease-free