Prunus cerasifera
Cherry Plum
a perennial woody deciduous member of the Prunus genus in the family Rosaceae.
Taxonomy and growth
Uses
Toxicity
Toxicity warning. The historical record reports a hazard for this plant. Do not use it to decide which parts are safe to eat or use medicinally.
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.
Edible uses
Fruit - raw or cooked in pies, tarts, jams etc[8][15][4][14][7]. The size of a small plum with a thin skin and a nice sweet flavour[7]. The flesh is somewhat mealy but is also juicy[K]. The fruit can hang on the tree until October[K]. The fruit is about 30mm in diameter and contains one large seed[9]. Seed - raw or cooked. Do not eat the seed if it is too bitter - see the notes above on toxicity.
- Plant part
- Fruit
- Plant part
- Seed
Medicinal uses
Historical medicinal uses. These records describe reported uses. They do not establish safety or effectiveness. Ask a qualified health professional before using any plant medicinally.
The plant is used in Bach flower remedies - the keywords for prescribing it are 'Desperation', 'Fear of losing control of the mind' and 'Dread of doing some frightful thing'[10]. It is also one of the five ingredients in the 'Rescue remedy'[10]. Although no specific mention has been seen for this species, 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[11].
- Product or use
- Bach
Material uses
A green dye can be obtained from the leaves[5]. A dark grey to green dye can be obtained from the fruit[5]. Makes quite a good windbreak hedge though it cannot stand too much exposure[1][2][12]. Often used as a rootstock for the cultivated plums, giving them a semi-dwarfing habit[16].
- Product or use
- Dye
Ecology and functions
- Ecosystem niche
- Secondary canopy
Environment
- Range
- W. Asia? Original habitat is obscure. Often planted in hedgerows in Britain but rarely naturalized.
- Habitat
- Not known in a truly wild situation.
- Light
- full sun
- Shade tolerance
- light shade
- Water
- moderate
- Hardiness
- Zone 4+
- Soil textures
- sandy, loamy, clay, heavy clay
- Soil pH
- acid, neutral, alkaline
- Drainage
- well drained
- Tolerances
- high wind
- Wind
- Yes
- Tolerates Nutritionally Poor Soil
- No
- Drought
- intolerant
Propagation
Seed - requires 2 - 3 months cold stratification and is best sown in a cold frame as soon as it is ripe[9]. Sow stored seed in a cold frame as early in the year as possible[9]. Protect the seed from mice etc. The seed can be rather slow, sometimes taking 18 months to germinate[3]. 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. Division of suckers in the dormant season. They can be planted out direct into their permanent positions.
Cultivation
Requires a well-drained moisture retentive soil[1][2]. Succeeds in light shade but fruits better in a sunny position[2][9]. Thrives in a loamy soil, doing well on limestone[2]. Grows well in heavy clay soils. Prefers some chalk in the soil but apt to become chlorotic if too much is present[1]. A very ornamental plant[1], it is sometimes cultivated for its edible fruit, unfortunately this is not often borne in large quantities in Britain[13][6], but large crops are produced every 4 years or so[K]. There are some named varieties[7]. Included as a part of P. divaricata by some botanists[2] though others include P. divaricata as a sub-species under this species[9]. Most members of this genus are shallow-rooted and will produce suckers if the roots are damaged[11]. Plants in this genus are notably susceptible to honey fungus[9].
References
F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951-00-00
Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981-00-00
Dirr. M. A. and Heuser. M. W. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press 1987-00-00 ISBN 0942375009
Loewenfeld. C. and Back. P. Britain's Wild Larder. David and Charles ISBN 0-7153-7971-2
Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974-00-00 ISBN 0-02-544950-8
Clapham, Tootin and Warburg. Flora of the British Isles. Cambridge University Press 1962-00-00
Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications 1990-00-00 ISBN 0-9628087-0-9
Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications 1972-00-00 ISBN 0-486-20459-6
Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992-00-00 ISBN 0-333-47494-5
Chancellor. P. M. Handbook of the Bach Flower Remedies C. W. Daniel Co. Ltd. 1985-00-00 ISBN 85207 002 0
Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995-00-00 ISBN 0-7513-020-31
Shepherd. F.W. Hedges and Screens. Royal Horticultural Society. 1974-00-00 ISBN 0900629649
Simmons. A. E. Growing Unusual Fruit. David and Charles 1972-00-00 ISBN 0-7153-5531-7
Harrison. S. Wallis. M. Masefield. G. The Oxford Book of Food Plants. Oxford University Press 1975-00-00
Mabey. R. Food for Free. Collins 1974-00-00 ISBN 0-00-219060-5
Usher. G. A Dictionary of Plants Used by Man. Constable 1974-00-00 ISBN 0094579202