Lewisia cotyledon Ashwood strain

RHS Plant Profile
Siskiyou lewisia Ashwood strain

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Siskiyou lewisia Ashwood strain RHS

Synonyms

Lewisia 'Ashwood Strain'

Alpine Rockery
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Ashwood strain are rosette-forming, evergreen perennials with fleshy, strap-shaped leaves, and stems to 20cm tall carrying loose sprays of funnel-shaped flowers in many shades of red, orange, yellow, pink and white

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing or North–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Montiaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Tufted
Genus
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
Name Status
Unresolved

How to Grow

Cultivation

Grow in moderately fertile, neutral to acid, very 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

Propagation

Propagate by seed or offsets

Suggested planting locations and garden types

  • Gravel garden
  • Patio and container plants
  • Rock garden

Pruning

No pruning required

Pests

May be susceptible to aphids, slugs and snails

Diseases

May be susceptible to neck rot in wet conditions