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Pittosporum tenuifolium - Gaertn.
                 
Common Name Tawhiwhi
Family Pittosporaceae
USDA hardiness 7-10
Known Hazards This plant contains saponins[152, 154]. Saponins are found in many foods, such as some beans, and although they are fairly toxic to people they are poorly absorbed by the body and most pass straight through without any problem. They are also broken down if the food is thoroughly cooked for a long time. Saponins are much more toxic to some creatures, such as fish, and hunting tribes have traditionally put large quantities of them in streams, lakes etc in order to stupefy or kill the fish[K].
Habitats Coastal to lower montane forests, North and South Islands, especially from North Cape and southwards[44].
Range New Zealand.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Frost Hardy Well drained soil Moist Soil Semi-shade Full sun

Summary

Pittosporum tenuifolium Tawhiwhi


Pittosporum tenuifolium Tawhiwhi
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Physical Characteristics
 icon of manicon of cone
Pittosporum tenuifolium is an evergreen Tree growing to 7 m (23ft) by 4 m (13ft) at a medium rate.
It is hardy to zone (UK) 8. It is in leaf 12-Jan It is in flower in May. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects.Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil. The plant can tolerate maritime exposure.

Synonyms
P. mayi. Hort. P. nigricans.

Habitats
Woodland Garden Sunny Edge; Dappled Shade; Hedge;
Edible Uses
Edible Parts:
Edible Uses: Gum.

Gum - fragrant. It is obtained by bruising the bark or by incision[128, 173].
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.



None known
Other Uses
Gum;  Hedge;  Hedge.

Very tolerant of trimming, plants can be grown as a formal or informal hedge in exposed maritime areas, though they do not stand extreme exposure[11, 75, 200]. When grown as a formal hedge it is best trimmed in spring, though this will mean that the plant will not produce many flowers[245]. A compromise is to only trim the hedge every other year[245].
Cultivation details
Succeeds in most well-drained soils of reasonably good quality in full sun or light shade[1, 200]. Succeeds in dry soils. Fairly tolerant of maritime exposure[75, 182], but it can be killed by cold winds[184]. Hardy to about -10°c[184], it is tender outside the milder areas of Britain, but often self-sows when happy. Plants have reached a height of 9 metres in a sheltered position in eastern England[11]. A very ornamental plant[1], there are many named varieties[200]. Very amenable to pruning, plants can be cut right back into old wood if required[200]. The species in this genus are very likely to hybridize with other members of the genus[200]. When growing a species from seed it is important to ensure that the seed either comes from a known wild source, or from isolated specimens in cultivation. Plants are widely cultivated for their foliage which lasts a long time in water and is used in flower arranging[11, 75]. The flowers are honey-scented[188]. Plants in this genus are notably resistant to honey fungus[200].
Propagation
Seed - sow when ripe in the autumn or in late winter in a warm greenhouse[78, 200]. The seed usually germinates freely. Prick out the seedlings into individual pots when they are large enough to handle, move the plants to a cold frame as soon as they are established and plant out late in the following spring[78]. Consider giving them some protection from the cold during their first winter outdoors. Cuttings of half-ripe wood, 5 - 7cm with a heel, July/August in a frame. Poor to fair percentage[78]. Basal ripewood cuttings late autumn in a cold frame[200].
Other Names
Found In
Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status :
Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Pittosporum balansae 10
Pittosporum bicolor 00
Pittosporum crassifoliumKaro, Stiffleaf cheesewood00
Pittosporum eugenioidesTarata11
Pittosporum phillyreoidesWeeping Pittosporum, Narrow-leaf Pittosporum21
Pittosporum ralphiiRalph's desertwillow00
Pittosporum tobiraTobira, Japanese cheesewood, Australian Laurel, Mock Orange, Japanese Pittosporum00
Pittosporum undulatumCheesewood, Australian cheesewood, Cheesewood, Pittosporum, Orange Berry Pittosporum, Victorian Box00
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Author
Gaertn.
Botanical References
1144200
Links / References
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Subject : Pittosporum tenuifolium  

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