Skip to site navigation

Crocus sieberi subsp. sublimis 'Tricolor' AGM

Home  |  Plants > Plant Selector > Crocus sieberi subsp. sublimis 'Tricolor' AGM

© RHS

Characteristics

Plant type

Bulb

Habit

Tufted

Fragrance

Flower

Resilience

Hardiness

H4 (hardy - average winter)

Colour

Flower

Purple, White and Yellow in Spring and Winter

Foliage

Dark Green in Spring and Winter

Size

Ultimate height

Up to 10 cm

Ultimate spread

0-0.1 metre

Time to ultimate height

2-5 years


Preferred common name

three-coloured Sieber's crocus

Family

Iridaceae


Crocus are dwarf, deciduous perennials growing from a corm, with linear leaves usually with a silvery central stripe, and goblet-shaped, sometimes fragrant flowers in autumn or early spring

'Tricolor' is a cormous perennial with large, fragrant flowers; the inner tepals pale mauve, outer ones mauve, and the throat yellow with a white outer zone, opening with the leaves in late winter

Synonym(s)

  • Crocus sieberi subsp. sublimis f. tricolor

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing, West-facing or East-facing
  • Exposed or Sheltered

Cultivation

Grow in a gritty, poor to moderately fertile soil

Soil

  • Well-drained
  • Acid, Alkaline or Neutral
  • Sand, Clay, Chalk or Loam

Propagation

Propagate by seed sown in containers in a cold frame when ripe or remove cormlets when dormant

Suggested planting locations and garden types

Banks and Slopes, City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Gravel Garden, Patio/Container Plants or Rock Garden


How to care

Pruning

No pruning required

Pests

Corms are vulnerable to mice, voles and squirrels

Diseases

Corms in storage may be subject to rots and moulds