Sedum oreganum

RHS Plant Profile

Oregon stonecrop

RHS / Joanna Kossak

Synonyms

Sedum obtusatum misapplied

Alpine Rockery Cactus Succulent

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A compact, evergreen, mat-forming perennial to 10cm tall with succulent green leaves that turn bronze-red in summer. Clusters of bright yellow, star-shaped flowers are borne on short stems in summer

Position

Full sun

Soil Types

Loam, Sand, Chalk

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

Loam Sand Chalk

Moisture: Well–drained
pH: 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: Evergreen
Habit: Matforming
Genus: Sedum may be annuals or herbaceous or evergreen perennials with succulent stems and leaves and clusters of small, star-shaped flowers in summer or autumn
Name Status: Correct
Plant Range: NW America

How to Grow

Cultivation

Grow in a sheltered position in moderately fertile, well-drained, alkaline to neutral soil in full sun. See hardy cacti and succulent cultivation for further advice

Propagation

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

Suggested planting locations and garden types

Coastal
Cottage and informal garden
Gravel garden
Patio and container plants
Rock garden
Low Maintenance
Garden edging

Pruning

No pruning required

Pests

May be susceptible to slugs, snails, vine weevil grubs, scale insects and mealybugs

Diseases

May be susceptible to fungal and bacterial crown and root rots