Aeonium 'Zwartkop'

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aeonium 'Zwartkop'

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aeonium 'Zwartkop' RHS
aeonium 'Zwartkop' RHS
aeonium 'Zwartkop' RHS
aeonium 'Zwartkop' RHS

Synonyms

Aeonium arboreum 'Arnold Schwarzkopff'
Aeonium arboreum 'Zwartkop'
Aeonium arboreum Blackhead

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Conservatory Greenhouse Cactus Succulent Houseplants
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A succulent evergreen perennial of open habit, with rosettes of deep blackish-purple leaves, and large panicles of small, starry, bright yellow flowers in early spring

Position

Full sun

Soil Types

Loam, Sand

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1-1.5 metres
Max Height
1-1.5 metres

Growing Conditions

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

Position

Full sun
Aspect
West–facing or South–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)
H1C
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
Bushy
Genus
Aeonium are evergreen succulents often of shrubby habit, with fleshy leaves in terminal rosettes on the shoots, and racemes or panicles of small, star-shaped flowers with numerous narrow petals
Name Status
Accepted

How to Grow

Cultivation

Grow under glass in a peat-free, loam-based potting compost with added extra grit. Water moderately when in growth, not at all when dormant. Apply a balanced liquid fertiliser 2 or 3 times in the growing season. See houseplant cacti and succulent cultivation for further advice

Propagation

Propagate by seed sown at 19-24°C in spring or by cuttings of rosettes kept at 18°C and barely moist until rooted

Suggested planting locations and garden types

  • Architectural
  • Coastal
  • City and courtyard gardens
  • Sub-tropical
  • Mediterranean climate plants
  • Houseplants
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to aphids and mealybugs

Diseases

Generally disease-free