πΏ Morphology
π Growing conditions
π Origin and family
πΎ Uses
Warning: Despite the care taken in writing this sheet, it is essential to cross-reference sources before using or consuming any plant. When in doubt, consult a qualified professional
Permaculture uses
Karo is primarily used as a windbreak and hedge plant due to its dense growth habit and tolerance of coastal conditions. While not commonly considered edible, its foliage provides shelter for beneficial insects. It can also be used for erosion control on slopes.
Permapeople description
Pittosporum crassifolium, commonly called karo, is a small tree or shrub native to New Zealand. It is a popular ornamental plant, known for its leathery, dark green leaves and fragrant, dark red flowers. It is often used as a hedge or screen.
Botanical description
Pittosporum crassifolium is a small evergreen tree or shrub native to New Zealand. It typically grows to a height of 16-33 feet. The leaves are thick, leathery, and oblong, measuring 2-4 inches long. They are dark green above and pale green below, often with a distinctive felt-like underside. The flowers are small, dark red, and fragrant, borne in clusters in spring. The fruit is a woody capsule that splits open to reveal sticky black seeds.
Companion planting
Pittosporum crassifolium is generally a good companion plant for other coastal species. Due to its dense canopy, it may shade out some smaller, sun-loving plants. It is tolerant of salt spray and wind, making it a valuable companion for more sensitive species in exposed locations.
Propagation methods
Karo can be propagated from seed, cuttings, or layering. Seed propagation requires scarification to break dormancy. Cuttings are best taken from semi-hardwood in late summer or early autumn. Layering can be done in spring or autumn.
History and traditions
In its native New Zealand, Pittosporum crassifolium was traditionally used by MΔori for medicinal purposes, particularly for treating skin conditions. The strong, flexible wood was also utilized for crafting tools and implements.
Usage calendar
Flowering occurs in spring (March-May). Seed collection is typically in late summer or autumn (August-October). Pruning can be done at any time of year to maintain shape, but is best undertaken after flowering.