Zamioculcas zamiifolia Raven ('Dowon'PBR)

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Zanzibar gem [Raven]

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Zanzibar gem [Raven] RHS / Joanna Kossak
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Synonyms

Zamioculcas zamiifolia 'Dowon'PBR
Zamioculcas 'Raven'

Conservatory Greenhouse Houseplants
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An evergreen perennial with succulent leaves that emerge lime green but quickly take on a deep purple-black colour

Position

Full shade, Partial shade

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

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

Position

Full shade Partial shade
Aspect
North–facing or South–facing or East–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)
H1B

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Araceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Harmful if eatenskin/eye irritant. Wear gloves and other protective equipment when handling. Pets: Harmful if eatenskin/eye irritant - for further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Zamioculcas are evergreen perennials, becoming deciduous if they dry out. They have large, water-storing rhizomes and shiny leaves divided into pairs of leaflets
Name Status
Trade

How to Grow

Cultivation

Grow as an indoor plant in well-drained compost with indirect light to full shade

Propagation

Propagate by leaf cuttings using single leaflets

Suggested planting locations and garden types

  • Patio and container plants
  • Sub-tropical

Pruning

Remove faded leaves as required

Pests

Generally pest-free

Diseases

Generally disease-free