Although no specific mention has been seen for this species, it belongs to a genus where most, if not all members of the genus produce hydrogen cyanide, a poison that gives almonds their characteristic flavour. This toxin is found mainly in the leaves and seed and is readily detected by its bitter taste. It is usually present in too small a quantity to do any harm but any very bitter seed or fruit should not be eaten. In small quantities, hydrogen cyanide has been shown to stimulate respiration and improve digestion, it is also claimed to be of benefit in the treatment of cancer. In excess, however, it can cause respiratory failure and even death.
Fruit - raw or cooked. A sweet agreeable flavour, they make a good pie
. A very good size, about 50mm in diameter with one large seed
Seed - raw or cooked. Do not eat the seed if it is too bitter - see the notes above on toxicity.
A green dye can be obtained from the leaves
A dark grey to green dye can be obtained from the fruit
The kernels are aperient, carminative, demulcent, deobstruent, diuretic, lenitive and ophthalmic
. Their use lowers the blood pressure
. A decoction is used in the treatment of sluggish colon, constipation, oedema and inadequate elimination of urine
The pits of this sub-species are aphrodisiac for both sexes.
The root is used in the treatment of constipation, children's fever, pinworms and teeth ailments.
All members of the genus contain amygdalin and prunasin, substances which break down in water to form hydrocyanic acid (cyanide or prussic acid). In small amounts this exceedingly poisonous compound stimulates respiration, improves digestion and gives a sense of well-being
Seed - requires 2 - 3 months cold stratification and is best sown in a cold frame as soon as it is ripe
. Sow stored seed in a cold frame as early in the year as possible
. Protect the seed from mice etc. The seed can be rather slow, sometimes taking 18 months to germinate
. Prick out the seedlings into individual pots when they are large enough to handle. Grow them on in a greenhouse or cold frame for their first winter and plant them out in late spring or early summer of the following year.
Cuttings of half-ripe wood with a heel, July/August in a frame.
Softwood cuttings from strongly growing plants in spring to early summer in a frame.
Layering in spring.
Practical Plants is currently lacking information on propagation instructions of Prunus japonica nakai. Help us fill in the blanks! Edit this page to add your knowledge.
Thrives in a well-drained moisture-retentive loamy soil
. Prefers some lime in the soil but is likely to become chlorotic if too much lime is present
. Succeeds in sun or partial shade though it fruits better in a sunny position
A very ornamental plant, but it is subject to die-back. Plants in this genus are notably susceptible to honey fungus.
This sub-species has larger plum-like fruits up to 50mm in diameter.
Closely related to P. glandulosa.
Most members of this genus are shallow-rooted and will produce suckers if the roots are damaged
Problems, pests & diseases
Associations & Interactions
There are no interactions listed for Prunus japonica nakai. Do you know of an interaction that should be listed here? edit this page to add it.
Polycultures & Guilds
There are no polycultures listed which include Prunus japonica nakai.
This table shows all the data stored for this plant.
Prunus japonica nakai
Material uses & Functions
Native Climate Zones
Adapted Climate Zones
Native Geographical Range
Root Zone Tendancy
? 1.01.1 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
? 2.002.012.022.032.042.052.062.072.082.092.10 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
? 3.03.13.2 Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. ISBN 0-02-544950-8 (1974-00-00)
? 4.04.14.2 ? A Barefoot Doctors Manual. Running Press ISBN 0-914294-92-X ()
? 5.05.15.2 Yeung. Him-Che. Handbook of Chinese Herbs and Formulas. Institute of Chinese Medicine, Los Angeles (1985-00-00)
? 6.06.1 Stuart. Rev. G. A. Chinese Materia Medica. Taipei. Southern Materials Centre ()
? 7.07.17.27.3 Duke. J. A. and Ayensu. E. S. Medicinal Plants of China Reference Publications, Inc. ISBN 0-917256-20-4 (1985-00-00)
? 8.08.1 Medicinal Plants in the Republic of Korea World Health Organisation, Manila ISBN 92 9061 120 0 (1998-00-00)
? 9.09.19.2 Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. ISBN 0-7513-020-31 (1995-00-00)
? Dirr. M. A. and Heuser. M. W. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press ISBN 0942375009 (1987-00-00)
? 11.011.111.211.311.4 Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray (1981-00-00)
? 12.012.1 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
? Ohwi. G. Flora of Japan. (English translation) Smithsonian Institution (1965-00-00)
? Wilson. E. H. and Trollope. M. N. Corean Flora. Royal Asiatic Society (1918-00-00)
? [Flora of China] (1994-00-00)