Arabis alpina subsp. caucasica 'Schneehaube'

RHS Plant Profile

mountain rock cress 'Schneehaube'

Synonyms

Arabis [Snow Cap], Arabis alpina 'Snowcap', Arabis alpina subsp. caucasica 'Schneehaube', Arabis alpina subsp. caucasica [Snowcap], Arabis caucasica [Snowcap]

Alpine Rockery

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A mat-forming, evergreen perennial, to 20cm tall, with loose rosettes of toothed, grey-green, oval leaves and, in spring, masses of fragrant, white flowers

Position

Full sun

Soil Types

Chalk, Clay, 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

Chalk Clay Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: West–facing or East–facing or South–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): H6

Colour & Scent

Fragrance Flower

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

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: Synonym

How to Grow

Cultivation

Will tolerate hot, dry conditions and poor, infertile soils. Good as ground cover. See aubrieta arabis and aurinia trial 2024-2026

Propagation

Propagate by softwood cuttings in summer, or by division

Suggested planting locations and garden types

Gravel garden
Patio and container plants
Rock garden
Wildlife gardens
Banks and slopes

Pruning

No pruning required

Pests

May be susceptible to aphids, arabis midge and flea beetles

Diseases

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