Crocosmia × crocosmiiflora 'Carmin Brillant'
montbretia 'Carmin Brilliant'
A cormous, clump forming, herbaceous perennial with an elegant growing habit up to 80cm tall when in flower. It has mid-green, blade-like leaves and arching flower stems that bear an abundance of red buds that develop into long-lasting and intense, dark orange, tubular flowers that have a yellow throat marked with reddish blotches from mid to late summer
Ultimate height0.5–1 metres
Time to ultimate height2–5 years
Ultimate spread0.1–0.5 metres
MoistureMoist but well–drained
pHAcid, Alkaline, Neutral
Colour & scent
|Orange Yellow Red
|Orange Yellow Red
- Partial shade
South–facing or West–facing or East–facing
ExposureExposed or Sheltered
- Native to the UK
- Clump forming
Crocosmia are deciduous cormous perennials with erect, sword-shaped leaves and branched spikes of showy, funnel-shaped flowers in summer
- Name status
How to grow
Corms should be planted in moderately fertile, humus rich soil approximately 10cm deep and 7.5–10cm apart in groups to form clumps. Water if it is a dry season as a lack of water reduces flowering. This species is listed on Schedule 9 of the UK Wildlife and Countryside Act as an invasive, non-native species. While this does not prevent it or its cultivars from being sold in the UK, or from being grown in gardens, the RHS encourages those that do grow it to take great care with managing it and with disposing of unwanted material to ensure that it does not spread outside of the garden.
Suggested planting locations and garden types
- Cottage and informal garden
- City and courtyard gardens
- Banks and slopes
- Underplanting of roses and shrubs
- Cut flowers
- Flower borders and beds
No pruning required, except the removal of dead leaves and flower stems before new growth starts in spring.
May be susceptible to glasshouse red spider mite
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.