Fortunella japonica
(Thunb.)Swingle.
Rutaceae
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Common Name: Round Kumquat
Fruiting plant growing in the Limonaia del Castel, Limone sul Garda, on Lake Garda, Brescia, Italy.
Photograph by: Daderot
Public domain
Fruiting plant growing in the Limonaia del Castel, Limone sul Garda, on Lake Garda, Brescia, Italy.
Photograph by: Daderot
Public domain
Close-up of a flower
Photograph by: Thanh Nam Nguyen
Creative Commons Attribution-Share Alike 2.0
Fruits
Photograph by: KENPEI
Creative Commons Attribution-Share Alike 3.0
Fruits and leaves
Photograph by: Phuong Tran
Creative Commons Attribution 2.0
Even when grown in a pot, the plant can fruit well
Photograph by: James Steakley
Creative Commons Attribution-Share Alike 3.0
Fruits - one cut open to reveal the flesh and seed
Photograph by: Mgmoscatello
Creative Commons Attribution-Share Alike 3.0
Cross-section of the fruit
Photograph by: Serg!o
Public domain
General Information
Fortunella japonica is an evergreen shrub that can grow up to 2.50 metres tall.
It is harvested from the wild for local use as a food, medicine and source of materials.
Known Hazards
None known
Botanical References
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.
,
275- Title
- Flora of Japan
- Publication
-
- Author
-
- Website
- http://www.foj.info
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- An on-line version of the flora - an excellent resource.
Range
E. Asia - China, Japan.
Habitat
Not known in a truly wild situation[
132- Title
- Fruits of the Earth.
- Publication
-
- Author
- Bianchini. F., Corbetta. F. and Pistoia. M.
- Publisher
-
- Year
-
- ISBN
-
- Description
- Lovely pictures, a very readable book.
].
Properties
Edibility Rating |    |
Medicinal Rating |  |
Habit | Evergreen Shrub |
Height | 2.50 m |
Cultivation Status | Wild |
Cultivation Details
Prefers a moderately heavy loam with a generous amount of compost and sand added and a very sunny position[
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 of 5 to 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 are intolerant of water logging[
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 not hardy in the colder areas of the country, when dormant it tolerates temperatures down to about -5°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.
]. The young growth in spring, even on mature plants, is frost-tender and so it is best to grow the plants in a position sheltered from the early morning sun[
K- Title
- Plants for a Future
- Author
- Ken Fern
- Description
- Notes from observations, tasting etc at Plants For A Future and on field trips.
].
Kumquats are widely cultivated in China for their edible fruit, there are many named varieties[
3- Title
- Growing Unusual Fruit.
- Publication
-
- Author
- Simmons. A. E.
- Publisher
- David & Charles; Newton Abbot.
- Year
- 1972
- ISBN
- 0-7153-5531-7
- Description
- A very readable book with information on about 100 species that can be grown in Britain (some in greenhouses) and details on how to grow and use them.
]. The plant is less vigorous, somewhat thorny and considerably more cold tolerant[
183- Title
- Cornucopia - A Source Book of Edible Plants.
- Publication
-
- Author
- Facciola. S.
- Publisher
- Kampong Publications
- Year
- 1990
- ISBN
- 0-9628087-0-9
- Description
- Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
] (the report gives no details of what this is in comparison to!). Kumquats are hardier than the various Citrus species since they cease growth when temperatures drop below 13°c but, for best results, it is best to grow them in a climate where temperatures do not fall lower than between 4 and 10°c[
3- Title
- Growing Unusual Fruit.
- Publication
-
- Author
- Simmons. A. E.
- Publisher
- David & Charles; Newton Abbot.
- Year
- 1972
- ISBN
- 0-7153-5531-7
- Description
- A very readable book with information on about 100 species that can be grown in Britain (some in greenhouses) and details on how to grow and use them.
]. This is because the fruit is sweeter when it ripens in warm conditions[
3- Title
- Growing Unusual Fruit.
- Publication
-
- Author
- Simmons. A. E.
- Publisher
- David & Charles; Newton Abbot.
- Year
- 1972
- ISBN
- 0-7153-5531-7
- Description
- A very readable book with information on about 100 species that can be grown in Britain (some in greenhouses) and details on how to grow and use them.
].
Edible Uses
Fruit - usually cooked and used in jellies, preserves etc[
183- Title
- Cornucopia - A Source Book of Edible Plants.
- Publication
-
- Author
- Facciola. S.
- Publisher
- Kampong Publications
- Year
- 1990
- ISBN
- 0-9628087-0-9
- Description
- Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
] or used as a flavouring, but it can also be eaten raw. The whole fruit, including the peel, is eaten[
3- Title
- Growing Unusual Fruit.
- Publication
-
- Author
- Simmons. A. E.
- Publisher
- David & Charles; Newton Abbot.
- Year
- 1972
- ISBN
- 0-7153-5531-7
- Description
- A very readable book with information on about 100 species that can be grown in Britain (some in greenhouses) and details on how to grow and use them.
,
132- Title
- Fruits of the Earth.
- Publication
-
- Author
- Bianchini. F., Corbetta. F. and Pistoia. M.
- Publisher
-
- Year
-
- ISBN
-
- Description
- Lovely pictures, a very readable book.
]. The fruit is acid whilst the peel is sweet[
3- Title
- Growing Unusual Fruit.
- Publication
-
- Author
- Simmons. A. E.
- Publisher
- David & Charles; Newton Abbot.
- Year
- 1972
- ISBN
- 0-7153-5531-7
- Description
- A very readable book with information on about 100 species that can be grown in Britain (some in greenhouses) and details on how to grow and use them.
,
132- Title
- Fruits of the Earth.
- Publication
-
- Author
- Bianchini. F., Corbetta. F. and Pistoia. M.
- Publisher
-
- Year
-
- ISBN
-
- Description
- Lovely pictures, a very readable book.
]. The peel is golden-yellow, smooth, thinner and somewhat sweeter than the oval kumquat, F. margarita[
183- Title
- Cornucopia - A Source Book of Edible Plants.
- Publication
-
- Author
- Facciola. S.
- Publisher
- Kampong Publications
- Year
- 1990
- ISBN
- 0-9628087-0-9
- Description
- Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
]. The fruit is rich in pectin and makes excellent marmalades and jellies[
240- Title
- Glossary of Indian Medicinal Plants (Including the Supplement).
- Publication
-
- Author
- Chopra. R. N., Nayar. S. L. and Chopra. I. C.
- Publisher
- Council of Scientific and Industrial Research, New Delhi.
- Year
- 1986
- ISBN
- -
- Description
- Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.
]. Vitamin C content is up to 0.24 mg/cc[
240- Title
- Glossary of Indian Medicinal Plants (Including the Supplement).
- Publication
-
- Author
- Chopra. R. N., Nayar. S. L. and Chopra. I. C.
- Publisher
- Council of Scientific and Industrial Research, New Delhi.
- Year
- 1986
- ISBN
- -
- Description
- Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.
]. The fruit is about 4cm long[
260- Title
- Conservatory and Indoor Plants Volumes 1 & 2
- Publication
-
- Author
- Phillips. R. & Rix. M.
- Publisher
- Pan Books, London.
- Year
- 1998
- ISBN
- 0-330-37376-5
- Description
- Excellent photos of over 1,100 species and cultivars with habits and cultivation details plus a few plant uses. Many species are too tender for outdoors in Britain though there are many that can be grown outside.
].
Medicinal
The plant is antiphlogistic, antivinous, carminative, deodorant, stimulant[
178- Title
- Chinese Materia Medica.
- Publication
-
- Author
- Stuart. Rev. G. A.
- Publisher
- Taipei. Southern Materials Centre
- Year
- 1911
- ISBN
- -
- Description
- A translation of an ancient Chinese herbal. Fascinating.
,
218- Title
- Medicinal Plants of China
- Publication
-
- Author
- Duke. J. A. and Ayensu. E. S.
- Publisher
- Reference Publications, Inc.
- Year
- 1985
- ISBN
- 0-917256-20-4
- Description
- Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
].
The leaves and fruit contain an essential oil, whilst the fruit also contains sugars and organic acids[
283- Title
- Medicinal Plants in Vietnam
- Publication
-
- Author
- Nguyen Van Dan & Doan Thi Nhu
- Publisher
- World Health Organisation
- Year
- 1989
- ISBN
- 92 9061 101 4
- Description
- An excellent book, giving information on over 200 plants, their medicinal compounds and applications.
]. The fresh fruit is antitussive and expectorant - in Vietnam it is steamed with sugar candy and used in the treatment of sore throats[
283- Title
- Medicinal Plants in Vietnam
- Publication
-
- Author
- Nguyen Van Dan & Doan Thi Nhu
- Publisher
- World Health Organisation
- Year
- 1989
- ISBN
- 92 9061 101 4
- Description
- An excellent book, giving information on over 200 plants, their medicinal compounds and applications.
]. It is said to be very good for infants[
283- Title
- Medicinal Plants in Vietnam
- Publication
-
- Author
- Nguyen Van Dan & Doan Thi Nhu
- Publisher
- World Health Organisation
- Year
- 1989
- ISBN
- 92 9061 101 4
- Description
- An excellent book, giving information on over 200 plants, their medicinal compounds and applications.
].
Other Uses
The fresh leaves and young twigs yield 0.21% essential oil that might be suitable for perfumery[
240- Title
- Glossary of Indian Medicinal Plants (Including the Supplement).
- Publication
-
- Author
- Chopra. R. N., Nayar. S. L. and Chopra. I. C.
- Publisher
- Council of Scientific and Industrial Research, New Delhi.
- Year
- 1986
- ISBN
- -
- Description
- Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.
].
Propagation
Seed - best sown as soon as it is ripe in a warm airy position in a greenhouse. When they are large enough to handle, prick out the seedlings into individual pots and grow them on in a greenhouse for at least their first two winters. Plant out in late spring or early summer after the last expected frosts and give some winter protection from the cold for a year or two.
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