Name: Pittosporum tenuifolium (Kohuhu)
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Pittosporum tenuifolium (Kohuhu)

Pittosporum tenuifolium is an elegant evergreen shrub with delicate, wavy-edged leaves and airy, upright growth habit. In late spring to early summer, it produces small, dark purple, honey-scented flowers that attract pollinators. This versatile plant is commonly used for hedging, screening, or as a feature shrub in gardens. It is particularly prized for its tolerance to coastal conditions, wind, and urban pollution, making it a hardy and low-maintenance choice.

Family of Trees: Pittosporaceae

Habit: Shrub or Small Tree, Suitable for Hedging

Growth Rate: 30 to 50 cm/year

Optimal Temperature: 10-25°C, hardy to -5°C

Harmful if Eaten?: Non-toxic to Humans and Pets

Flowers or Berries: Small Dark Purple Flowers

Hardiness: H4-H5 (Moderately Hardy)

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)