Pittosporum tenuifolium 'Wrinkled Blue'

RHS Plant Profile
tawhiwhi 'Wrinkled Blue'

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tawhiwhi 'Wrinkled Blue' RHS
Shrubs
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A neat, upright evergreen shrub with silver-blue, wavy edge foliage on dark stems.

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

2.5-4 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
10–20 years
Max Spread
1.5-2.5 metres
Max Height
2.5-4 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
South–facing or 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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Pittosporaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Pittosporum are evergreen shrubs or trees with simple, leathery leaves and small, often fragrant, 5-petalled flowers, followed by spherical, woody fruits splitting to reveal seeds embedded in sticky pulp
Name Status
Accepted

How to Grow

Cultivation

Easy to grow in a reasonably fertile, moist but well-drained, soil. Young plants may need protection in colder locations especially from cold, drying winds. Plant in full sun for the best leaf effect.

Propagation

Propagate by semi-hardwood cuttings in summer

Suggested planting locations and garden types

  • Cottage and informal garden
  • Architectural
  • Low Maintenance
  • Hedging and screens
  • Flower borders and beds

Pruning

Pruning group 1

Pests

May be susceptible to glasshouse red spider mite, aphids, cushion scale and pittosporum sucker

Diseases

May be susceptible to powdery mildews, leafspot and honey fungus (rarely)