Delosperma congestum L. Bolus

RHS Plant Profile
congested ice plant

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congested ice plant RHS
Alpine Rockery Cactus Succulent

Delospermum congestum is a mat-forming, spreading succulent with semi-cylindrical leaves that may flush red in the winter and daisy-like, bright yellow summer flowers

Position

Full sun

Soil Types

Loam, Sand

Max Height

Up to 10 cm

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
Up to 10 cm

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
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)
H4
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Aizoaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Matforming
Genus
Delosperma are mat-forming perennials, or dwarf shrubs, with smooth, fleshy leaves. The daisy-like flowers are brightly coloured in shades of pink, purple, yellow, red, orange or white
Name Status
Correct
Plant Range
South Africa, Lesotho

How to Grow

Cultivation

Grows best in full sun with very good drainage

Propagation

Propagate by seed or by stem cuttings

Suggested planting locations and garden types

  • Patio and container plants
  • Gravel garden
  • Rock garden

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free