Oshima Cherry
Prunus lannesiana
Family: Rosaceae
What it is like
Prunus lannesiana is a deciduous Tree. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.
Height (m): 0
Where it is found
Not known in a truly wild situation
E. Asia.
Conservation Status:
Countries/locations it is found in
How it is used
Food
Rating: 2
Fruit - raw or cooked. The fruit contains a single large seed. Flowers - preserved in salt and used in tea. Seed - raw or cooked. Do not eat the seed if it is too bitter - see the notes above on toxicity.
Seed: includes nuts, cereals, peas and beans.
Medicine
Rating: 1
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.
Other
Rating: 1
A green dye can be obtained from the leaves. A dark grey to green dye can be obtained from the fruit.
Dye: Plants that provide dyes.
Scented Plants: Plants noted for their scent
How it is grown
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. This name is used by Japanese botanists to cover a wide range of flowering garden cherries, many of which are believed to have derived from P. speciosa, P. serrulata spontanea or hybrids of the two. The form P. lannesiana affinis is a compact bushy plant with an upright habit, suitable for small gardens. The flowers have a delicious almond perfume. Most members of this genus are shallow-rooted and will produce suckers if the roots are damaged. Plants in this genus are notably susceptible to honey fungus.
Propagating it: 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.
Best place to grow: Woodland Garden Secondary; Sunny Edge;
Habit: Tree
Hardiness:
Growth:
Soil: Light (sandy), medium, heavy (clay)
Shade: Semi-shade, no shade
Moisture: Moist
Things to keep in mind
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.