Rubus microphyllus
At a glance
- Lifecycle
- Perennial (hardy)
- Exposure
- Full sun
- Frost limit
- −6.7 °C
Cultivation
Easily grown in a good well-drained loamy soil in sun or semi-shade. This species is not very hardy in Britain. It only tolerates light frosts but it should be possible to grow it outdoors in the mildest areas of the country. Plants in this genus are notably susceptible to honey fungus.
Propagation
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. Tip layering in July. Plant out in autumn. Division in early spring or just before leaf-fall in the autumn.
Edible uses
Fruit - raw or cooked.
Material uses
A purple to dull blue dye is obtained from the fruit.
Habitat
Low mountains, C. and S. Japan.
Native range
E. Asia - China, Japan.