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karo native tree

The karo native tree, scientifically known as Pittosporum crassifolium, is one of New Zealand’s most versatile and attractive native plants. Characterised by its lush, leathery foliage and distinctive grey-green leaves, karo is a popular choice for gardeners looking to establish shelter, privacy hedges, or add a touch of native elegance to their landscape. With its coastal tolerance and resilience against wind, salt, and drought, karo thrives in even the toughest conditions. This hardy tree is not only easy to care for but also provides valuable habitat for native birds, making it an essential addition to eco-friendly gardens throughout Aotearoa.

Pittosporum crassifolium (Karo)

5 from 5 customers

Karo, Cheesewood, Kaikaro

Pittosporum crassifolium, commonly known as Karo, is a hardy, evergreen shrub or small tree native to New Zealand. It features dense, grey-green leathery leaves and produces small, fragrant purple flowers in spring, followed by sticky seed capsules. Karo grows 3–5 metres tall and is ideal for hedging, shelterbelts, or coastal planting. It thrives in full sun to partial shade, tolerates wind, salt spray, and drought, and requires minimal maintenance, making it perfect for tough NZ conditions.

Pittosporum crassifolium (Karo) olive-green foliage and red flowers.
  • Suited to regions:
    All regions
  • Plant type:
    Trees
  • Height:
    10.00 m
  • Spread:
    4.00 m
  • Flowering time:
    Spring
  • Tolerances:
    Coastal, Hardy
  • Garden uses:
    Hedging, Parks, Ponds, Pool areas, Screening, Specimen
  • Garden styles:
    Alpine, Backyard, City & Courtyard, Coastal, Formal, Frontyard, Modern, Native
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Pittosporum crassifolium (Karo)

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Features and Benefits of Karo Native Tree

Karo stands out for its dense growth habit, which makes it a superb screening plant or windbreak. The rounded, bushy form can be clipped for formal hedges, or left natural to create a soft, layered look. Its small, fragrant red-purple flowers bloom in spring, attracting birds and pollinators. Pittosporum crassifolium is well-suited to coastal gardens, as its foliage is resistant to salt spray—a trait that distinguishes it from many other native trees. When planted en masse, karo creates a sheltered microclimate, helping protect more tender plants and promoting biodiversity.

Planting and Care Tips

The karo native tree thrives in full sun to partial shade and tolerates a wide range of soils, including sandy or poor soils often found in coastal areas. It requires minimal maintenance: regular watering during establishment and occasional pruning to shape or control size. Karo can grow up to 4 metres tall and responds well to trimming, making it perfect for hedges or privacy screens. Mulching around the base conserves moisture and adds organic matter to the soil. For best results, plant karo alongside other natives such as Pittosporum eugenioides (Tarata) or Olearia traversiorum (Hakapiri) to create a robust, layered garden ecosystem.

Landscaping Ideas with Karo Native Tree

Karo’s adaptable nature means it fits seamlessly into a variety of landscape settings. Use it as a shelterbelt in windy sites, a privacy hedge along boundary lines, or as a backdrop to feature plantings like Acer Brandywine (Brandywine Maple) or Michelia 'Lemon Fragrant'. For compact spaces or mixed native plantings, consider pairing karo with smaller Pittosporum cultivars such as Pittosporum 'Wrinkled Blue', Pittosporum 'Limelight' (Kohuhu), or Pittosporum 'Midget' (Dwarf Pittosporum). Diverse plantings create habitats for native wildlife and elevate your garden’s appeal year-round.

Complementary Native Pittosporum Species

If you’re a fan of native Pittosporums, explore the unique features of Pittosporum tenuifolium for its delicate foliage and elegant shape, or discover the robust charm of Agathis robusta and the dramatic foliage of Corylus maxima Purpurea. By mixing and matching native trees and shrubs, your garden will not only look stunning but also support local ecology.

Embrace the natural beauty and resilience of the karo native tree in your landscape with reliable, expert guidance from our nursery.


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