Lophomyrtus × ralphii Black Pearl ('Yanearl')

RHS Plant Profile
New Zealand myrtle [Black Pearl]

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New Zealand myrtle [Black Pearl] RHS

Synonyms

Lophomyrtus × ralphii 'Yanearl'
Lophomyrtus 'Black Pearl'

Shrubs Conservatory Greenhouse
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An evergreen shrub with small, round, slightly puckered, dark purple leaves. Mature plants produce small, white, scented, cup-shaped flowers with a mass of stamens in late summer, followed by black berries

Position

Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
10–20 years
Max Spread
1-1.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Partial shade
Aspect
West–facing or East–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)
H3

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Myrtaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Lophomyrtus are evergreen shrubs or small trees with simple, leathery leaves, four-petaled flowers with prominent stamens and purple-black to red berries
Name Status
Trade

How to Grow

Cultivation

Under glass, grow in peat-free, loam-based potting compost in bright, filtered light. In mild areas grow outdoors in fertile, humus-rich, moist but well-drained soil in a sheltered position in partial shade

Propagation

Root semi-ripe heel cuttings in summer with bottom heat

Suggested planting locations and garden types

  • Coastal
  • Mediterranean climate plants
  • City and courtyard gardens
  • Patio and container plants
  • Cut flowers
  • Wall side borders

Pruning

Pruning group 1

Pests

May be susceptible to glasshouse red spider mite

Diseases

Generally disease-free