Sedum aizoon

RHS Plant Profile
Aizoon stonecrop

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Aizoon stonecrop RHS
Aizoon stonecrop RHS
Herbaceous Perennial
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A rhizomatous, deciduous perennial, to about 45cm tall, with upright, unbranched, red stems bearing coarsely-toothed, narrowly oval leaves up to 8cm long. In summer produces flattened clusters of small, yellow, star-shaped flowers

Position

Full sun

Soil Types

Chalk, 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 Loam Sand
Moisture
Well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
West–facing or South–facing or East–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
Clump forming
Potentially harmful
May cause mild stomach upset if eatencontact with sap may irritate skin. Wear gloves and other protective equipment when handling
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
N Asia

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

Suggested planting locations and garden types

  • Cottage and informal garden
  • City and courtyard gardens
  • Gravel garden
  • Patio and container plants
  • Low Maintenance
  • Banks and slopes
  • Flower borders and beds

Pruning

Cut back after flowering to maintain shape or leave seedheads overwinter

Pests

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

Diseases

May be susceptible to fungal and bacterial crown rot and root rots