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Pittosporum crassifolium, commonly known as Karo




  • Size: Karo is a medium-sized tree that can grow up to 10 meters in height. It has a rounded or spreading growth habit and a dense canopy.
  • Leaves: The leaves of Pittosporum crassifolium are leathery, glossy, and elliptical in shape. They are typically dark green, but some varieties may have slightly lighter or variegated foliage. The leaves are arranged alternately along the stems.
  • Flowers: Karo produces small, fragrant flowers that are usually dark purple or reddish-brown in color. The flowers are tubular and are borne in dense clusters at the ends of the branches. They attract bees and other pollinators.
  • Fruit: After flowering, Karo develops small, woody capsules that contain numerous seeds. The capsules split open when ripe, releasing the seeds.


Growing Conditions:


  • Climate: Pittosporum crassifolium is well-adapted to temperate climates, particularly in coastal regions of New Zealand. It can tolerate mild frosts and is relatively hardy.
  • Sunlight: Karo thrives in full sun to partial shade. It prefers a location with bright, indirect light.
  • Soil: The tree prefers well-draining soils that are fertile and rich in organic matter. It can grow in a range of soil types, including sandy, loamy, and clay soils. It is tolerant of coastal and slightly alkaline soils.
  • Watering: Pittosporum crassifolium has moderate water needs and prefers regular watering to keep the soil evenly moist. However, it can withstand short periods of drought once established.
  • Maintenance: This tree is generally low-maintenance. Pruning can be done to maintain its shape or remove any dead or damaged branches. Pruning is typically done in late winter or early spring.


Pittosporum crassifolium is often used in gardens, parks, and coastal landscapes for its attractive foliage, fragrant flowers, and tolerance to coastal conditions. It can be grown as a standalone specimen tree, in hedges, or as part of mixed plantings. Karo provides habitat and food for birds, butterflies, and other wildlife, contributing to the overall biodiversity of the area.

Pittosporum crassifolium Karo

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