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Useful Tropical Plants

Raphanus sativus niger

J.Kern.

Brassicaceae


There does not seem to be a consensus on the correct name for this species. Some treatments classify the plant as Raphanus sativus L. Var. sativus; others as Raphanus raphanistrum subsp. sativus (L.) Domin(2013)[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

+ Synonyms

Raphanus raphanistrum sativus (L.) Domin

Raphanus sativus sativus L.

Common Name: Oriental Radish

Raphanus sativus niger
Plants of the Japanese Radish (Daikon)
Photograph by: Kazuo Hishiki
Public domain
Raphanus sativus niger Raphanus sativus niger Raphanus sativus niger Raphanus sativus niger Raphanus sativus niger

General Information

Oriental, or Winter radish is an erect, annual plant growing up to 60cm tall from a cylindrical, thickened, fleshy root[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
The Oriental and winter radishes are often cultivated, especially in eastern Asia, for their large edible roots.

Known Hazards

The Japanese radishes have higher concentrations of glucosinolate, a substance that acts against the thyroid gland. It is probably best to remove the skin[
160
Title
Wonder Crops. 1987.
Publication
 
Author
Natural Food Institute,
Publisher
 
Year
 
ISBN
 
Description
Fascinating reading, this is an annual publication. Some reports do seem somewhat exaggerated though.
].

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.

Range

A plant of cultivation. the origin of which is obscure. It probably arose through cultivation.

Habitat

Not known in the wild.

Properties

Edibility Rating *  *  *  *
Medicinal Rating *  *  *
Other Uses Rating *  *
HabitAnnual
Height0.45 m
Growth RateFast
PollinatorsBees, flies
Cultivation StatusCultivated

Cultivation Details

A plant of the temperate zone, but it can be cultivated in the tropics. It grows best in areas where annual daytime temperatures are within the range 12 - 26°c, but can tolerate 10 - 37°c[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. It prefers a mean annual rainfall in the range 1,000 - 1,500mm, but tolerates 800 - 2,800mm[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
Grows best in a sunny position[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. Prefers a rich soil with ample moisture[
16
Title
New Vegetable Growers Handbook.
Publication
 
Author
Simons.
Publisher
Penguin
Year
1977
ISBN
0-14-046-050-0
Description
A good guide to growing vegetables in temperate areas, not entirely organic.
,
52
Title
Salads all the Year Round.
Publication
 
Author
Larkcom. J.
Publisher
Hamlyn
Year
1980
ISBN
 
Description
A good and comprehensive guide to temperate salad plants, with full organic details of cultivation.
]. Dislikes very heavy or acid soils[
16
Title
New Vegetable Growers Handbook.
Publication
 
Author
Simons.
Publisher
Penguin
Year
1977
ISBN
0-14-046-050-0
Description
A good guide to growing vegetables in temperate areas, not entirely organic.
,
37
Title
The Gardener's Assistant.
Publication
 
Author
Thompson. B.
Publisher
Blackie and Son.
Year
1878
ISBN
-
Description
Excellent general but extensive guide to gardening practices in the 19th century. A very good section on fruits and vegetables with many little known species.
]. Prefers a pH in the range 6 - 7, tolerating 4.3 - 8.3[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
]. Some of the Oriental radish cultivars have been selected for growing in clay soils, the swollen part of the root is formed on the soil surface[
206
Title
Oriental Vegetables
Publication
 
Author
Larkcom J.
Publisher
John Murray
Year
1991
ISBN
0-7195-4781-4
Description
Well written and very informative.
]. Plants are susceptible to drought and require irrigation during dry spells in the summer or the root quality will rapidly deteriorate and the plant will go to seed.
The first roots can be harvested 50 - 90 days after sowing the seed[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
The roots of Chinese cultivars can weight up to 2.5 kilos per root, whilst Japanese cultivars may produce roots with a weight of 10 - 20 kilos. The root may grow to a depth of 100 - 150cm[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
Yields of the roots vary between 12 - 20 tonnes per hectare[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].
The plant flowers and produces seeds at low elevations and under short day conditions[
418
Title
Ecocrop
Publication
 
Author
 
Website
http://ecocrop.fao.org/ecocrop/srv/en/home
Publisher
 
Year
0
ISBN
 
Description
Basic information on a wide range of useful plants, plus details of environmental needs where available.
].

Edible Uses

Root - raw or cooked[
2
Title
Sturtevant's Edible Plants of the World.
Publication
 
Author
Hedrick. U. P.
Publisher
Dover Publications
Year
1972
ISBN
0-486-20459-6
Description
Lots of entries, quite a lot of information in most entries and references.
,
37
Title
The Gardener's Assistant.
Publication
 
Author
Thompson. B.
Publisher
Blackie and Son.
Year
1878
ISBN
-
Description
Excellent general but extensive guide to gardening practices in the 19th century. A very good section on fruits and vegetables with many little known species.
,
52
Title
Salads all the Year Round.
Publication
 
Author
Larkcom. J.
Publisher
Hamlyn
Year
1980
ISBN
 
Description
A good and comprehensive guide to temperate salad plants, with full organic details of cultivation.
]. Large, crisp and juicy, many varieties have a hot and spicy flavour, though there are also many of the Oriental forms with much milder flavours. They can be sliced and eaten in salads or can be cooked in soups etc. The roots store well and can be either harvested in early winter for storage or be harvested as required through the winter[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

Young leaves - raw or cooked[
37
Title
The Gardener's Assistant.
Publication
 
Author
Thompson. B.
Publisher
Blackie and Son.
Year
1878
ISBN
-
Description
Excellent general but extensive guide to gardening practices in the 19th century. A very good section on fruits and vegetables with many little known species.
,
52
Title
Salads all the Year Round.
Publication
 
Author
Larkcom. J.
Publisher
Hamlyn
Year
1980
ISBN
 
Description
A good and comprehensive guide to temperate salad plants, with full organic details of cultivation.
,
104
Title
The Garden. Volume 111.
Publication
 
Author
RHS.
Publisher
Royal Horticultural Society
Year
1986
ISBN
-
Description
Snippets of information from the magazine of the RHS, including an article on Crambe maritima and another on several species thought to be tender that are succeeding in a S. Devon garden.
,
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.
]. A somewhat hot taste, and the texture is somewhat coarse[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
]. As long as they are young, they make an acceptable addition in small quantities to chopped salads and are a reasonable cooked green[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
]. A nutritional analysis is available[
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.
].

Young flower clusters - raw or cooked[
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.
]. A spicy flavour with a crisp pleasant texture, they make a nice addition to salads or can be used as a broccoli substitute[
9
Title
Edible and Medicinal Plants.
Publication
 
Author
Launert. E.
Publisher
Hamlyn
Year
1981
ISBN
0-600-37216-2
Description
Covers plants in Europe. a drawing of each plant, quite a bit of interesting information.
,
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].

Seeds - raw. The seed can be soaked for 12 hours in warm water and then allowed to sprout for about 6 days[
244
Title
Herbs
Publication
 
Author
Phillips. R. & Foy. N.
Publisher
Pan Books Ltd. London.
Year
1990
ISBN
0-330-30725-8
Description
Deals with all types of herbs including medicinal, culinary, scented and dye plants. Excellent photographs with quite good information on each plant.
]. They have a hot spicy flavour and go well in salads[
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.
,
244
Title
Herbs
Publication
 
Author
Phillips. R. & Foy. N.
Publisher
Pan Books Ltd. London.
Year
1990
ISBN
0-330-30725-8
Description
Deals with all types of herbs including medicinal, culinary, scented and dye plants. Excellent photographs with quite good information on each plant.
].

Young seedpods - raw[
2
Title
Sturtevant's Edible Plants of the World.
Publication
 
Author
Hedrick. U. P.
Publisher
Dover Publications
Year
1972
ISBN
0-486-20459-6
Description
Lots of entries, quite a lot of information in most entries and references.
,
37
Title
The Gardener's Assistant.
Publication
 
Author
Thompson. B.
Publisher
Blackie and Son.
Year
1878
ISBN
-
Description
Excellent general but extensive guide to gardening practices in the 19th century. A very good section on fruits and vegetables with many little known species.
,
52
Title
Salads all the Year Round.
Publication
 
Author
Larkcom. J.
Publisher
Hamlyn
Year
1980
ISBN
 
Description
A good and comprehensive guide to temperate salad plants, with full organic details of cultivation.
,
104
Title
The Garden. Volume 111.
Publication
 
Author
RHS.
Publisher
Royal Horticultural Society
Year
1986
ISBN
-
Description
Snippets of information from the magazine of the RHS, including an article on Crambe maritima and another on several species thought to be tender that are succeeding in a S. Devon garden.
]. Crisp and juicy with a mildly hot flavour[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
]. They must be eaten when young because they quickly become tough and fibrous[
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.
].

An edible oil is obtained from the seed[
2
Title
Sturtevant's Edible Plants of the World.
Publication
 
Author
Hedrick. U. P.
Publisher
Dover Publications
Year
1972
ISBN
0-486-20459-6
Description
Lots of entries, quite a lot of information in most entries and references.
,
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.
].

Medicinal

Radishes have long been grown as a food crop, but they also have various medicinal actions. The roots stimulate the appetite and digestion, having a tonic and laxative effect upon the intestines and indirectly stimulating the flow of bile[
254
Title
The Encyclopedia of Medicinal Plants
Publication
 
Author
Chevallier. A.
Publisher
Dorling Kindersley. London
Year
1996
ISBN
9-780751-303148
Description
An excellent guide to over 500 of the more well known medicinal herbs from around the world.
]. Consuming radish generally results in improved digestion, but some people are sensitive to its acridity and robust action[
254
Title
The Encyclopedia of Medicinal Plants
Publication
 
Author
Chevallier. A.
Publisher
Dorling Kindersley. London
Year
1996
ISBN
9-780751-303148
Description
An excellent guide to over 500 of the more well known medicinal herbs from around the world.
].

The plant is used in the treatment of intestinal parasites, though the part of the plant used is not specified[
147
Title
A Barefoot Doctors Manual.
Publication
 
Author
?
Publisher
Running Press; Philadelphica.
Year
1977
ISBN
0-914294-92-X
Description
A very readable herbal from China, combining some modern methods with traditional chinese methods.
].

The leaves, seeds and old roots are used in the treatment of asthma and other chest complaints[
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 juice of the fresh leaves is diuretic and laxative[
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 seed is carminative, diuretic, expectorant, laxative and stomachic[
176
Title
Handbook of Chinese Herbs and Formulas.
Publication
 
Author
Yeung. Him-Che.
Publisher
Institute of Chinese Medicine, Los Angeles
Year
1985
ISBN
-
Description
An excellent Chinese herbal giving information on over 500 species. Rather technical and probably best suited to the more accomplished user of herbs.
,
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.
,
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.
]. It is taken internally in the treatment of indigestion, abdominal bloating, wind, acid regurgitation, diarrhoea and bronchitis[
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.
].

The root is antiscorbutic, antispasmodic, astringent, cholagogue, digestive and diuretic[
21
Title
The Herb Book.
Publication
 
Author
Lust. J.
Publisher
Bantam books
Year
1983
ISBN
0-553-23827-2
Description
Lots of information tightly crammed into a fairly small book.
,
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.
]. It is crushed and used as a poultice for burns, bruises and smelly feet[
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.
]. Radishes are also an excellent food remedy for stone, gravel and scorbutic conditions[
4
Title
A Modern Herbal.
Publication
 
Author
Grieve.
Publisher
Penguin
Year
1984
ISBN
0-14-046-440-9
Description
Not so modern (1930's?) but lots of information, mainly temperate plants.
]. The root is best harvested before the plant flowers[
21
Title
The Herb Book.
Publication
 
Author
Lust. J.
Publisher
Bantam books
Year
1983
ISBN
0-553-23827-2
Description
Lots of information tightly crammed into a fairly small book.
]. Its use is not recommended if the stomach or intestines are inflamed[
21
Title
The Herb Book.
Publication
 
Author
Lust. J.
Publisher
Bantam books
Year
1983
ISBN
0-553-23827-2
Description
Lots of information tightly crammed into a fairly small book.
].

The plant contains raphanin, which is antibacterial and antifungal[
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.
,
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.
]. It inhibits the growth of Staphylococcus aureus, E. coli, streptococci, Pneumococci etc[
176
Title
Handbook of Chinese Herbs and Formulas.
Publication
 
Author
Yeung. Him-Che.
Publisher
Institute of Chinese Medicine, Los Angeles
Year
1985
ISBN
-
Description
An excellent Chinese herbal giving information on over 500 species. Rather technical and probably best suited to the more accomplished user of herbs.
]. The plant also shows anti-tumour activity[
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.
].

Agroforestry Uses:

The growing plant repels beetles from tomatoes and cucumbers[
20
Title
Companion Planting for Successful Gardening.
Publication
 
Author
Riotte. L.
Publisher
Garden Way, Vermont, USA.
Year
1978
ISBN
0-88266-064-0
Description
Fairly good.
,
201
Title
A - Z of Companion Planting.
Publication
 
Author
Allardice.P.
Publisher
Cassell Publishers Ltd.
Year
1993
ISBN
0-304-34324-2
Description
A well produced and very readable book.
]. It is also useful for repelling various other insect pests such as carrot root fly[
201
Title
A - Z of Companion Planting.
Publication
 
Author
Allardice.P.
Publisher
Cassell Publishers Ltd.
Year
1993
ISBN
0-304-34324-2
Description
A well produced and very readable book.
].
Radishes are a good companion plant for lettuces, nasturtiums, peas and chervil, tomatoes and cucumbers[
18
Title
Companion Plants.
Publication
 
Author
Philbrick H. and Gregg R. B.
Publisher
Watkins
Year
1979
ISBN
-
Description
Details of beneficial and antagonistic relationships between neighbouring plants.
,
20
Title
Companion Planting for Successful Gardening.
Publication
 
Author
Riotte. L.
Publisher
Garden Way, Vermont, USA.
Year
1978
ISBN
0-88266-064-0
Description
Fairly good.
]. They are said to repel cucumber beetles if planted near cucumber plants and they also repel the vine borers which attack squashes, marrows and courgettes[
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.
]. They grow badly with hyssop[
18
Title
Companion Plants.
Publication
 
Author
Philbrick H. and Gregg R. B.
Publisher
Watkins
Year
1979
ISBN
-
Description
Details of beneficial and antagonistic relationships between neighbouring plants.
,
20
Title
Companion Planting for Successful Gardening.
Publication
 
Author
Riotte. L.
Publisher
Garden Way, Vermont, USA.
Year
1978
ISBN
0-88266-064-0
Description
Fairly good.
] and with grape vines[
201
Title
A - Z of Companion Planting.
Publication
 
Author
Allardice.P.
Publisher
Cassell Publishers Ltd.
Year
1993
ISBN
0-304-34324-2
Description
A well produced and very readable book.
].

Other Uses

There is a fodder variety that grows more vigorously and is used as a green manure[
87
Title
Green Manures.
Publication
 
Author
Woodward. L. Burge. P.
Publisher
Elm Farm Research Centre.
Year
1982
ISBN
-
Description
Green manure crops for temperate areas. Quite a lot of information on a number of species.
].

Propagation

Seed - sow in situ. Germination should take place in a few days.

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