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Useful Temperate Plants

Pittosporum tenuifolium

Gaertn.

Pittosporaceae

+ Synonyms

Pittosporum viride Hook.f.

Pittosporum bidwillianum Regel

Pittosporum enderi Regel

Pittosporum mayi Regel

Pittosporum nigricans Davy in Bailey

Pittosporum translucens Hook. ex Putterl.

Pittosporum colensoi Hook.f.

Pittosporum fasciculatum Hook.f.

Pittosporum huttonianum viridiflorum Kirk

Pittosporum uniflorum Hook.f.

Common Name: Tawhiwhi

No Image.

General Information

Pittosporum tenuifolium is an evergreen tree with a slender crown; it can grow up to 10 metres tall. The bole can be up to 30cm in diameter, occasionally more[
11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
,
44
Title
Flora of New Zealand.
Publication
 
Author
Allan. H. H.
Website
http://floraseries.landcareresearch.co.nz/pages/Book.aspx?fileName=Flora%201.xml
Publisher
Government Printer, Wellington.
Year
1961
ISBN
-
Description
The standard work, in 5 volumes though only the first two are of interest to the plant project. Very good on habitats. There is also an on-line version.
,
1683
Title
The Australian and New Zealand Species of Pittosporum
Publication
Annals of the Missouri Botanical Garden Vol. 43 No. 2, pp 87-188 May 1956
Author
Cooper R.C.
Publisher
 
Year
1956
ISBN
 
Description
Rather dated, but still an excellent treatment.
].
The planIt is harvested from the wild for local use as a food and source of materials. It is often grown as an ornamental, where it can be used to make a hedge, and the cut foliage is much used in floristry[
11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
].

Known Hazards

This plant contains saponins[
152
Title
Australian Medicinal Plants
Publication
 
Author
Lassak. E. V. and McCarthy. T.
Publisher
New Holland Publishers
Year
2001
ISBN
1876334703
Description
A very good and readable guide to the subject.
,
154
Title
Flora of Victoria.
Publication
 
Author
Ewart. A. J.
Publisher
University Press; Melbourne
Year
1930
ISBN
 
Description
A flora of eastern Australia, it is rather short on information that is useful to the plant project.
].
Although poisonous, saponins also have a range of medicinal applications and many saponin-rich plants are used in herbalism (particularly as emetics, expectorants and febrifuges) or as sources of raw materials for the pharmaceutical industry. Saponins are also found in a number of common foods, such as many beans.
Saponins have a quite bitter flavour and are in general poorly absorbed by the human body, so most pass through without harm. They can be removed by carefully leaching in running water. Thorough cooking, and perhaps changing the cooking water once, will also normally remove most of them. However, it is not advisable to eat large quantities of raw foods that contain saponins.
Saponins are much more toxic to many cold-blooded 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 and make them easy to catch[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

Botanical References

11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
,
44
Title
Flora of New Zealand.
Publication
 
Author
Allan. H. H.
Website
http://floraseries.landcareresearch.co.nz/pages/Book.aspx?fileName=Flora%201.xml
Publisher
Government Printer, Wellington.
Year
1961
ISBN
-
Description
The standard work, in 5 volumes though only the first two are of interest to the plant project. Very good on habitats. There is also an on-line version.
,
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

Range

New Zealand - North and South Islands.

Habitat

Coastal to lower montane forests, North and South Islands, especially from North Cape and southwards[
44
Title
Flora of New Zealand.
Publication
 
Author
Allan. H. H.
Website
http://floraseries.landcareresearch.co.nz/pages/Book.aspx?fileName=Flora%201.xml
Publisher
Government Printer, Wellington.
Year
1961
ISBN
-
Description
The standard work, in 5 volumes though only the first two are of interest to the plant project. Very good on habitats. There is also an on-line version.
].

Properties

Edibility Rating *  *
HabitEvergreen Tree
Height7.00 m
Growth RateMedium
PollinatorsInsects
Cultivation StatusOrnamental, Wild

Cultivation Details

Pittosporum tenuifolium is hardy to about -10°c[
184
Title
Shrubs.
Publication
 
Author
Phillips. R. & Rix. M.
Publisher
Pan Books
Year
1989
ISBN
0-330-30258-2
Description
Excellent photographs and a terse description of 1,900 species and cultivars.
], 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
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
].
Succeeds in most well-drained soils of reasonably good quality in full sun or light shade[
1
Title
RHS Dictionary of Plants plus Supplement. 1956
Publication
 
Author
F. Chittendon.
Publisher
Oxford University Press
Year
1951
ISBN
-
Description
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
,
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Succeeds in dry soils. Fairly tolerant of maritime exposure[
75
Title
Shelter Trees and Hedges.
Publication
 
Author
Rosewarne experimental horticultural station.
Publisher
Ministry of Agriculture, Fisheries and Food
Year
1984
ISBN
-
Description
A small booklet packed with information on trees and shrubs for hedging and shelterbelts in exposed maritime areas.
,
182
Title
Ornamental Shrubs, Climbers and Bamboos.
Publication
 
Author
Thomas. G. S.
Publisher
Murray
Year
1992
ISBN
0-7195-5043-2
Description
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.
], but it can be killed by cold winds[
184
Title
Shrubs.
Publication
 
Author
Phillips. R. & Rix. M.
Publisher
Pan Books
Year
1989
ISBN
0-330-30258-2
Description
Excellent photographs and a terse description of 1,900 species and cultivars.
].
A very ornamental plant[
1
Title
RHS Dictionary of Plants plus Supplement. 1956
Publication
 
Author
F. Chittendon.
Publisher
Oxford University Press
Year
1951
ISBN
-
Description
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
], there are many named varieties[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Very amenable to pruning, plants can be cut right back into old wood if required[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Although flowers usually appear to be hermaphrodite, many species of Pittosporum are functionally dioecious, with individual specimens bearing mainly or totally flowers of one sex only. Even so, occasional functionally hermaphrodite flowers will appear and, in at least some species, these flowers can be self-compatible and produce fertile seed even in the absence of any other plants of that species[
1685
Title
Revision of Pittosporum (Pittosporaceae) in Australia
Publication
Australian Systematic Botany 13, 845-902, 2000
Author
Cayzer L.W.; Crisp M.D. & Telford I.R.H.
Publisher
 
Year
2000
ISBN
 
Description
A comprehensive review of the genus in Australia
].
The species in this genus are also very likely to hybridize with other members of the genus[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. 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
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
,
75
Title
Shelter Trees and Hedges.
Publication
 
Author
Rosewarne experimental horticultural station.
Publisher
Ministry of Agriculture, Fisheries and Food
Year
1984
ISBN
-
Description
A small booklet packed with information on trees and shrubs for hedging and shelterbelts in exposed maritime areas.
]. The flowers are honey-scented, the aroma being strongest in the evening[
11
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
,
188
Title
The RHS Gardener's Encyclopedia of Plants and Flowers
Publication
 
Author
Brickell. C.
Publisher
Dorling Kindersley Publishers Ltd.
Year
1990
ISBN
0-86318-386-7
Description
Excellent range of photographs, some cultivation details but very little information on plant uses.
].
Plants in this genus are notably resistant to honey fungus[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].

Edible Uses

A fragrant gum is obtained by bruising the bark or by incision. It is used as a masitcatory[
128
Title
Plants of New Zealand.
Publication
 
Author
Laing. and Blackwell.
Publisher
Whitcombe and Tombs Ltd
Year
1907
ISBN
-
Description
An old flora of New Zealand in a readable style. Some details of plant uses.
,
173
Title
Native Edible Plants of New Zealand.
Publication
 
Author
Crowe. A.
Publisher
Hodder and Stoughton
Year
1990
ISBN
0-340-508302
Description
A very well written and illustrated book based on the authors own experiments with living on a native diet.
,
292
Title
People Plants Database
Publication
 
Author
 
Website
http://peopleplants.landcareresearch.co.nz/WebForms/default.aspx
Publisher
 
Year
0
ISBN
 
Description
An online database of New Zealand plants and their Maori names and uses. An excellent information source.
].

Medicinal

A gum-resin obtained from the trunk is of potential use in medicine[
1683
Title
The Australian and New Zealand Species of Pittosporum
Publication
Annals of the Missouri Botanical Garden Vol. 43 No. 2, pp 87-188 May 1956
Author
Cooper R.C.
Publisher
 
Year
1956
ISBN
 
Description
Rather dated, but still an excellent treatment.
].

Agroforestry Uses:

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
Title
Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement.
Publication
 
Author
Bean. W.
Publisher
Murray
Year
1981
ISBN
-
Description
A classic with a wealth of information on the plants, but poor on pictures.
,
75
Title
Shelter Trees and Hedges.
Publication
 
Author
Rosewarne experimental horticultural station.
Publisher
Ministry of Agriculture, Fisheries and Food
Year
1984
ISBN
-
Description
A small booklet packed with information on trees and shrubs for hedging and shelterbelts in exposed maritime areas.
,
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. 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
Title
Scented Flora of the World.
Publication
 
Author
Genders. R.
Publisher
Robert Hale. London.
Year
1994
ISBN
0-7090-5440-8
Description
An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.
]. A compromise is to only trim the hedge every other year[
245
Title
Scented Flora of the World.
Publication
 
Author
Genders. R.
Publisher
Robert Hale. London.
Year
1994
ISBN
0-7090-5440-8
Description
An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.
].

Other Uses

A fragrant gum obtained from the stem is used to scent oils[
292
Title
People Plants Database
Publication
 
Author
 
Website
http://peopleplants.landcareresearch.co.nz/WebForms/default.aspx
Publisher
 
Year
0
ISBN
 
Description
An online database of New Zealand plants and their Maori names and uses. An excellent information source.
].
An essential oil rich in alpha-pinene is obtained from the stem[
292
Title
People Plants Database
Publication
 
Author
 
Website
http://peopleplants.landcareresearch.co.nz/WebForms/default.aspx
Publisher
 
Year
0
ISBN
 
Description
An online database of New Zealand plants and their Maori names and uses. An excellent information source.
].

Propagation

Seed - sow when ripe in the autumn or in late winter in a warm greenhouse[
78
Title
Propagation of Trees, Shrubs and Conifers.
Publication
 
Author
Sheat. W. G.
Publisher
MacMillan and Co
Year
1948
ISBN
-
Description
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
,
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. 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
Title
Propagation of Trees, Shrubs and Conifers.
Publication
 
Author
Sheat. W. G.
Publisher
MacMillan and Co
Year
1948
ISBN
-
Description
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
]. Consider giving them some protection from the cold during their first winter outdoors.
Cuttings of half-ripe wood, 5 - 7cm with a heel, mid summer in a frame. Poor to fair percentage[
78
Title
Propagation of Trees, Shrubs and Conifers.
Publication
 
Author
Sheat. W. G.
Publisher
MacMillan and Co
Year
1948
ISBN
-
Description
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
].
Basal ripewood cuttings late autumn in a cold frame[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2019-10-17. <temperate.theferns.info/plant/Pittosporum+tenuifolium>

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