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Alpine Rockery

Androsace sempervivoides

sempervivum-leaved rock jasmine

A mat-forming evergreen perennial, producing sprays of pink to mauve-pink, yellow-eyed, scented flowers 10mmacrossin spring. The eyes turn red with age, and the flower stems are also red

Synonyms

Androsace mucronifolia misapplied

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Ultimate height

Up to 10cm

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

West–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)

Botanical details

Family: Primulaceae
Native to the UK: No
Foliage: Evergreen
Habit: Matforming
Genus: Androsace can be annuals, biennials or evergreen perennials forming mats or compact cushions, with salver-shaped flowers which may be solitary or in umbels
Name status: Correct
Plant range: Kashmir, Tibet

How to grow

Cultivation

Grow in a scree bed, in vertical crevices in rock or in moist but gritty, well-drained soil, or in containers

Propagation

Propagate by seed sown in containers in an open cold frame as soon as ripe or in autumn. Root single rosettes as cuttings in early to midsummer. Keep moist but water from below to avoid wetting the rosettes

Suggested planting locations and garden types

Patio and container plants
Rock garden
Gravel garden

Pruning

No pruning required

Pests

Generally pest-free. May be susceptible to aphids under glass

Diseases

Vulnerable to fungal diseases in damp conditions. Remove dead rosettes to reduce the risk of infection

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