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Useful Tropical Plants

Citrus junos

Siebold ex Tanaka

Rutaceae

+ Synonyms

Citrus aurantium junos Makino

Common Name: Yuzu

Citrus junos
Ripening fruits
Photograph by: North Carolina State University Herbarium
Public Domain
Citrus junos Citrus junos Citrus junos Citrus junos Citrus junos Citrus junos Citrus junos

General Information

Yuzu is an evergreen shrub or small tree growing 2 - 7 metres tall[
377
Title
Trade Winds Fruit
Publication
 
Author
 
Website
http://www.tradewindsfruit.com/index.htm
Publisher
 
Year
0
ISBN
 
Description
The on-line catalogue of a company selling seeds. Gives descriptions, photos and uses of a very wide range of fruit and other food-producing plants plus ornamentals.
].
The edible fruit is relatively rare, and highly prized in the Orient, where the plant has been known and cultivated in China for 2,000 years or more. It is also grown in other areas, particularly Japan and Korea[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
,
377
Title
Trade Winds Fruit
Publication
 
Author
 
Website
http://www.tradewindsfruit.com/index.htm
Publisher
 
Year
0
ISBN
 
Description
The on-line catalogue of a company selling seeds. Gives descriptions, photos and uses of a very wide range of fruit and other food-producing plants plus ornamentals.
].

Known Hazards

None known

Botanical References


Range

Only known in cultivation.

Habitat

Not known in a truly wild situation, though it sometimes naturalises[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
].

Properties

Edibility Rating *  *  *
Medicinal Rating *
Other Uses Rating *  *
HabitEvergreen Tree
Height5.00 m
Cultivation StatusCultivated

Cultivation Details

Three main climates are suitable for commercial citrus production - tropical climates, subtropical with winter rain such as in the Mediterranean and semitropical with summer rainfall as found in Florida and southern Brazil[
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 optimal temperatures for citrus cultivation range between 25 - 30°c, with the coldest month having an average minimum of at least 15°c[
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.
]. Growth generally ceases below 13°c and above 38°c[
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.
]. If there are dry periods of more than three months, then irrigation will be necessary[
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.
]. This species is one of the hardiest in the genus, aid to be able to withstand temperatures down to -12°c[
377
Title
Trade Winds Fruit
Publication
 
Author
 
Website
http://www.tradewindsfruit.com/index.htm
Publisher
 
Year
0
ISBN
 
Description
The on-line catalogue of a company selling seeds. Gives descriptions, photos and uses of a very wide range of fruit and other food-producing plants plus ornamentals.
].
Prefers a deep, well-drained but moisture-retentive loamy soil in full sun[
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.
]. Prefers a pH in the range 5 - 6[
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.
]. Plants cannot withstand long dry periods[
377
Title
Trade Winds Fruit
Publication
 
Author
 
Website
http://www.tradewindsfruit.com/index.htm
Publisher
 
Year
0
ISBN
 
Description
The on-line catalogue of a company selling seeds. Gives descriptions, photos and uses of a very wide range of fruit and other food-producing plants plus ornamentals.
].
This species is possibly a hybrid involving C. Cavaleriei and C. Reticulata[
266
Title
Flora of China
Publication
 
Author
 
Website
http://flora.huh.harvard.edu/china/
Publisher
Missouri Botanical Garden Press; St. Louis.
Year
1994
ISBN
 
Description
An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
].

Edible Uses

The fruits have been used as a substitute of limon and lime[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
]. They have a highly fragrant rind and flesh with an acid and tart flavour[
377
Title
Trade Winds Fruit
Publication
 
Author
 
Website
http://www.tradewindsfruit.com/index.htm
Publisher
 
Year
0
ISBN
 
Description
The on-line catalogue of a company selling seeds. Gives descriptions, photos and uses of a very wide range of fruit and other food-producing plants plus ornamentals.
]. The grated or slivered rind and juice are used for their distinctive, refreshing fragrance and flavour in Japanese-style dishes[
301
Title
Cornucopia II
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications, California.
Year
1998
ISBN
0-9628087-2-5
Description
The second edition of an excellent guide to the edible uses of plants, though it does not give any details of cultivation etc.
,
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
].
The fruit juice is processed into a distinctive, citrus-flavoured vinegar[
301
Title
Cornucopia II
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications, California.
Year
1998
ISBN
0-9628087-2-5
Description
The second edition of an excellent guide to the edible uses of plants, though it does not give any details of cultivation etc.
,
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
]. The fruit is also utilized as a source of citric acid[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
].

Medicinal

Citrus species contain a wide range of active ingredients and research is still underway in finding uses for them. They are rich in vitamin C, flavonoids, acids and volatile oils. They also contain coumarins such as bergapten which sensitizes the skin to sunlight. Bergapten is sometimes added to tanning preparations since it promotes pigmentation in the skin, though it can cause dermatitis or allergic responses in some people[
238
Title
Encyclopaedia of Herbs and their Uses.
Publication
 
Author
Bown. D.
Publisher
Dorling Kindersley, London.
Year
1995
ISBN
0-7513-020-31
Description
A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.
]. Some of the plants more recent applications are as sources of anti-oxidants and chemical exfoliants in specialized cosmetics[
238
Title
Encyclopaedia of Herbs and their Uses.
Publication
 
Author
Bown. D.
Publisher
Dorling Kindersley, London.
Year
1995
ISBN
0-7513-020-31
Description
A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.
].

Other Uses

Essential oils extracted from the plant are used in perfumes, lotions, and soaps[
377
Title
Trade Winds Fruit
Publication
 
Author
 
Website
http://www.tradewindsfruit.com/index.htm
Publisher
 
Year
0
ISBN
 
Description
The on-line catalogue of a company selling seeds. Gives descriptions, photos and uses of a very wide range of fruit and other food-producing plants plus ornamentals.
].

This species is an important cold-resistant rootstock for other Citrus species[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
].

Propagation

Seed-grown plants are normally quite similar to their parent, but there is always a chance of hybridisation with atypical seedlings being produced[
377
Title
Trade Winds Fruit
Publication
 
Author
 
Website
http://www.tradewindsfruit.com/index.htm
Publisher
 
Year
0
ISBN
 
Description
The on-line catalogue of a company selling seeds. Gives descriptions, photos and uses of a very wide range of fruit and other food-producing plants plus ornamentals.
]. The seed is best sown in containers as soon as it is ripe, after thoroughly rinsing it[
164
Title
Growing from Seed. Volume 4.
Publication
 
Author
Bird. R. (Editor)
Publisher
Thompson and Morgan.
Year
1990
ISBN
-
Description
Very readable magazine with lots of information on propagation. A good article on Yuccas, one on Sagebrush (Artemesia spp) and another on Chaerophyllum bulbosum.
,
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.
]. Sow stored seed in containers as soon as possible]. Germination usually takes place within 2 - 3 weeks at 13°c. Seedlings are liable to damp off so they must be watered with care and kept well ventilated. The seed is usually polyembrionic, two or more seedlings arise from each seed and they are genetically identical to the parent but they do not usually carry any virus that might be present in the parent plant[
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 large enough to handle, prick the seedlings out into individual pots and grow them on until they are 10cm or more tall before planting out into their permanent positions.
Cuttings of half-ripe wood, July/August in a frame. This species grows easily from cuttings[
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.
].
Layering in October.

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