Practical
Plants

Sorbus thibetica

No photo available

Taxonomy and growth

Family
Rosaceae
Genus
Sorbus
Life cycle
perennial
Foliage
deciduous
Woodiness
woody
Height
20 m
Spread
15 m
Fertility
Insects
Flower type
hermaphrodite
Pollinators
Insects

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.

The seeds probably contain hydrogen cyanide. This is the ingredient that gives almonds their characteristic flavour. Unless the seed is very bitter it should be perfectly safe in reasonable quantities. 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. Very nice raw when it is fully ripe, preferably picked after a frost[K]. At this stage it has a mealy texture and a mild-flavoured slightly sweet fruit. The fruit can also be bletted. This involves storing the fruit in a cool dry place until it is almost but not quite going rotten. At this stage the fruit has a delicious taste, somewhat like a luscious tropical fruit. The fruit is up to 15mm across[3].

Plant part
Fruit

Ecology and functions

Ecosystem niche
Canopy

Environment

Range
E. Asia - E. Himalayas to Burma.
Habitat
Dense forests on slopes or in valleys, rocky slopes, streambanks and shrubby thickets at elevations of 2400 - 3800 metres in Tibet[4].
Light
full sun
Shade tolerance
light shade
Water
moderate
Hardiness
Zone 6+
Soil textures
sandy, loamy, clay
Soil pH
acid, neutral, alkaline
Drainage
well drained
Tolerances
high wind
Wind
Yes
Tolerates Nutritionally Poor Soil
No
Drought
intolerant

Propagation

Seed - best sown as soon as it is ripe in a cold frame[5][6]. If you have sufficient seed it can be sown in an outdoor seedbed[5][6]. Stored seed germinates better if given 2 weeks warm then 14 - 16 weeks cold stratification[7], so sow it as early in the year as possible. Prick out the seedlings into individual pots when they are large enough to handle. Seedlings are very slow to put on top-growth for their first year or two[1], but they are busy building up a good root system. It is best to keep them in pots in a cold frame for their first winter and then plant them out into their permanent positions in late spring.

Cultivation

Succeeds in most reasonably good soils in an open sunny position[1]. Tolerates light shade[2], though it fruits better in a sunny position[K]. Plants are susceptible to fireblight[2]. Closely related to S. cuspidata[1].

References

  1. Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981-00-00

    ↩1↩2↩3

  2. Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers Dorling Kindersley Publishers Ltd. 1990-00-00 ISBN 0-86318-386-7

    ↩1↩2

  3. Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992-00-00 ISBN 0-333-47494-5

    ↩

  4. Flora of China 1994-00-00 http://flora.huh.harvard.edu/china/

    ↩

  5. Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948-00-00

    ↩1↩2

  6. McMillan-Browse. P. Hardy Woody Plants from Seed. Grower Books 1985-00-00 ISBN 0-901361-21-6

    ↩1↩2

  7. Gordon. A. G. and Rowe. D. C. f. Seed Manual for Ornamental Trees and Shrubs.

    ↩

Edit this page