Pittosporum tenuifolium
Kōhūhū
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Kōhūhū (Pittosporum tenuifolium) - Description
Pittosporum tenuifolium is a small evergreen tree, up to 10 m (33 ft), native to New Zealand, commonly known as kōhūhū and black matipo, and by other Māori names kohukohu and tawhiwhi. It is sometimes grown under the cultivar name 'Nigricans', so called because of its black stems. In horticulture it is valued for its coloured foliage (cultivated variations include purple, "silver" and variegated leaves), and for its tolerance of some horticulturally difficult growing conditions, including dry soils and shade (although in northwest Europe, cold and exposed situations do not suit it).
Kōhūhū (Pittosporum tenuifolium) - Blooming
Blooms bell-shaped flowers followed by brown or yellow, spherical capsules. The capsules of some species will split open to reveal often sticky seeds in colors such as red, black, and orange. Species with purple leaves will color the best if grown in full sun.
Kōhūhū (Pittosporum tenuifolium) - Growth
Evergreen trees and shrubs. Pittosporums grows well anywhere from full sun to half shade. In sites with warm climates, tree species work well in a lawn and the shrubs make good hedges and borders.
Kōhūhū (Pittosporum tenuifolium) - Planting
Sow seed as soon as ripe, or in a cold frame in the spring. Semi-ripe cuttings may be taken in summer.
Kōhūhū (Pittosporum tenuifolium) - Pest
Aphids, root knot nematode, scale insects, and mealybugs. Pittosporum is also susceptible to dieback, galls, cankers, and leaf spots.
Kōhūhū (Pittosporum tenuifolium) - Interesting facts
The leaves of P. eugenioides produce a lemon scent when crushed.
Kōhūhū (Pittosporum tenuifolium) - Soil and irrigation
In containers, plant in mineral soil. Outdoors, grow in fertile, well-drained soil. Water moderately during the growing season, sparingly in winter.
