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Lewisia cotyledon AGM

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© RHS 2002

Characteristics

Plant type

Alpine/Rockery

Habit

Tufted

Resilience

Hardiness

H4 (hardy - average winter)

Colour

Flower

Orange, Pink, White or Yellow in Spring or Summer

Foliage

Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

Siskiyou lewisia

Family

Portulacaceae


Lewisia can be herbaceous or evergreen perennials forming rosettes of fleshy leaves, with panicles of open funnel-shaped flowers in a wide range of colours in spring and summer

L. cotyledon is a rosette-forming evergreen perennial with fleshy, strap-shaped leaves. Abundant, funnel-shaped purplish-pink, orange, yellow or white flowers 1.5-2.5cm in width are borne in open sprays on stems to 20cm

How to grow

Sunlight

  • Part shade

Aspect

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

Cultivation

Grow in moderately fertile, neutral to acid, well-drained soil in full sun or light shade. Suitable for the alpine house, rock garden, or in the crevices of a retaining wall. Protect from winter wet

Soil

  • Well-drained
  • Acid or Neutral
  • Loam or Sand

Propagation

Propagate by seed or offsets

Suggested planting locations and garden types

Gravel Garden, Patio/Container Plants or Rock Garden


How to care

Pruning

No pruning required

Pests

May be attacked by aphids, slugs and snails

Diseases

May be subject to neck rots in wet conditions