Practical
Plants

Rubus trifidus

a perennial woody evergreen member of the Rubus genus in the family Rosaceae.

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Taxonomy and growth

Family
Rosaceae
Genus
Rubus
Life cycle
perennial
Foliage
evergreen
Woodiness
woody
Height
2 m
Fertility
Insects
Flower type
hermaphrodite
Pollinators
Insects

Uses

Edible uses

This section contains historical Plants For A Future notes marked noncommercial.

Fruit - raw or cooked[1][3][8][2]. A grateful taste[6].

Plant part
Fruit

Material uses

This section contains historical Plants For A Future notes marked noncommercial.

A purple to dull blue dye is obtained from the fruit[4].

Product or use
Dye

Environment

Range
E. Asia - Japan.
Habitat
By the shore in the warmer areas of C. Japan[8].
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, maritime exposure
Wind
Yes
Maritime
Yes
Tolerates Nutritionally Poor Soil
No
Drought
intolerant

Propagation

This section contains historical Plants For A Future notes marked noncommercial.

Seed - requires stratification and is best sown in early autumn in a cold frame. Stored seed requires one month stratification at about 3°c and is best sown as early as possible in the year. Prick out the seedlings when they are large enough to handle and grow on in a cold frame. Plant them out into their permanent positions in late spring of the following year. Cuttings of half-ripe wood, July/August in a frame[7]. Tip layering in July. Plant out in autumn. Division in early spring or just before leaf-fall in the autumn[7].

Cultivation

This section contains historical Plants For A Future notes marked noncommercial.

Easily grown in a good well-drained loamy soil in sun or semi-shade[1][3][7]. Plants are evergreen when grown in a sheltered woodland[5]. Often cultivated for its edible fruit in Japan[8], plants do not flower very freely in Britain[3]. Plants have perennial stems that are thornless[7]. Plants in this genus are notably susceptible to honey fungus[7].

References

  1. F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951-00-00

    ↩1↩2

  2. Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing 1976-00-00

    ↩

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

    ↩1↩2↩3

  4. Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974-00-00 ISBN 0-02-544950-8

    ↩

  5. Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos. Murray 1992-00-00 ISBN 0-7195-5043-2

    ↩

  6. Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications 1972-00-00 ISBN 0-486-20459-6

    ↩

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

    ↩1↩2↩3↩4↩5

  8. Ohwi. G. Flora of Japan. (English translation) Smithsonian Institution 1965-00-00

    ↩1↩2↩3

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