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Colchicum 'Glory of Threave'
  • RHS AGM
  • RHS Plants for pollinators

meadow saffron 'Glory of Threave'

A cormous perennial with tall, narrow blooms in autumn, each comprising a goblet of lustrous, pinkish-purple petals, with a white star in the centre, supported on a dark purple perianth tube. Narrow, semi-erect leaves, to about 20cm long, are produced in spring, fading by summer

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0–0.1 metre
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer
Autumn Purple White
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Colchicaceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright, Clump forming
Potentially harmful
TOXIC if eaten. Wear gloves and other protective equipment when handling TOXIC to pets - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus

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

Name status

Accepted

How to grow

Cultivation

Plant 10cm deep in summer or early autumn in deep, fertile, moist but well-drained soil in a sunny site. Bulks up well and can be naturalised, even in rough grass

Propagation

Propagate by separating corms when dormant in summer

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

No pruning required; allow leaves to die down naturally

Pests

May be susceptible to slugs

Diseases

May be susceptible to grey moulds

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