Hylotelephium cyaneum 'Sakhalin'

RHS Plant Profile

azure stonecrop 'Sakhalin'

RHS

Synonyms

Sedum cyaneum 'Sakhalin'

Alpine Rockery

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A deciduous, mat-forming perennial with short dark red stems and fleshy grey leaves, flushed with purple. Flat heads of star-shaped, purple-pink flowers appear in late summer and early autumn

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

Up to 10 cm

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: Up to 10 cm

Growing Conditions

Chalk Loam Sand

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

Position

Full sun

Aspect: South–facing or West–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): H7
Drought Resistance: Yes

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Crassulaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Matforming
Genus: Hylotelephium are succulent perennials with heads of small star-shaped flowers in summer to autumn. They are sometimes included within the genus Sedum
Name Status: Unresolved

How to Grow

Cultivation

Grow in very free-draining soil in an open sunny position, or in an alpine house in a loam-based potting compost with added grit

Propagation

Propagate by softwood cuttings of non-flowering shoots in early summer

Suggested planting locations and garden types

Patio and container plants
Gravel garden
Rock garden

Pruning

No pruning required

Pests

Aphids, scale insects, mealybugs and vine weevils may be a problem

Diseases

Generally disease-free