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Colchicum speciosum
  • RHS Plants for pollinators

giant meadow saffron

A corm producing 1-3 deep purplish-rose flowers up to 8cm in length, with pale green or whitish tubes. Strap-shaped, rich green leaves to 25cm in length develop in spring

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer
Autumn Pink Purple
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Colchicaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
TOXIC if eaten. Wear gloves and other protective equipment when handling
Genus

Colchicum are cormous perennials with usually coarse, broadly strap-shaped leaves which appear with or after the goblet-shaped flowers

Name status

Correct

Plant range
N Turk., Iran, Cauc.

How to grow

Cultivation

May be naturalized in turf. Grow in moist but well-drained, deep, humus-rich, fertile soil. Intolerant of waterlogging

Propagation

Propagate by seed sown in containers in an open frame when ripe or separate corms when dormant in summer

Suggested planting locations and garden types
  • Cottage and informal garden
  • Patio and container plants
  • Low Maintenance
  • Underplanting of roses and shrubs
  • Flower borders and beds
Pruning

No pruning required

Pests

May be susceptible to slugs

Diseases

May be subject to bulb grey mould

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