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Alpine Rockery

Arabis alpina subsp. caucasica Little Treasure White ('Aralba')
  • RHS Plants for pollinators

mountain rock cress [Little Treasure White]

An evergreen mat-forming herbaceous perennial to 15cm (6in) high and 20cm (8in) across. Bears loose rosettes of obovate, toothed mid-green leaves and fragrant four-petalled white flowers in late spring and summer

Synonyms
Arabis alpina subsp. caucasica 'Aralba'
Arabis alpina subsp. caucasica 'Little Treasure White'
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Clay
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer White Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or East–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Brassicaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Matforming
Genus

Arabis can be annuals or evergreen perennials, usually mat-forming, with simple leaves and racemes of 4-petalled white, pink or purple flowers.

Name status

Trade

How to grow

Cultivation

Grow in well drained soils. Good for ground cover

Propagation

Propagate by softwood cuttings in summer, or by division

Suggested planting locations and garden types
  • Rock garden
  • Gravel garden
  • Patio and container plants
  • Wildlife gardens
  • Low Maintenance
  • Ground cover
  • Banks and slopes
Pruning

Trim back after flowering

Pests

May be susceptible to arabis midge and flea beetles

Diseases

May be susceptible to a downy mildew, white blister, and virus diseases

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