EVERGREEN

Plant Encyclopedia

Aucuba japonica var. borealis

Aucuba japonica var. borealis ("Himeaoki")

Japanese name: ヒメアオキ (姫青木)
Scientific name: Aucuba japonica var. borealis

Aucuba japonica var. borealis

[Overview]
An evergreen shrub found in forests and at forest edges in heavy-snow regions.
It is smaller overall than Aoki, and young buds and inflorescences are covered with many appressed hairs.
The branches are dark green, and the trunk branches well from the base and, instead of standing upright, creeps sideways close to the ground.
Leaves are simple and opposite, broadly elliptic-ovate to broadly lanceolate, thick, with a glossy upper surface.
The leaf margins have coarse serrations.
The leaves turn black when dried.
It has leaf stalks.
It is dioecious.
Panicles are produced at the branch tips.
The flowers are small, 4-petaled, and purplish brown.
Male flowers have 4 stamens and a disc, and female flowers have a horn-shaped ovary.
Female plants bear fruit; the fruit is an elliptic drupe that ripens red.

[Uses]
The leaves are used as a folk remedy.

[Cultivation]
Propagate from seed, cuttings, or layering.
For seed, collect fully ripe fruit, wash off the pulp thoroughly with water, and sow immediately.
Cultivation is easy.
It grows from sun to shade, but strong direct sunlight in summer can scorch the leaves.
It prefers slightly moist, fertile soil, and poor drainage can cause root rot.
For potted plants, water thoroughly when the soil surface dries.
In spring, apply slow-release fertilizer at the base of the plant.
It dislikes pruning, but if pruning is done, cut above a node.
Pests and diseases include brown spot, anthracnose, scale insects, tea red spider mite (Chano-hokoridani), and the Aoki gall midge (Aoki-mitamabae).

Details

Names
Japanese: ヒメアオキ(姫青木)
Life form
Shrub
Evergreen / deciduous
Evergreen
Leaf type
Broadleaf
Habit
Terrestrial
Planting (or sowing) season
March, April, June, July, September
Flowering season
March, April, May
Fruiting season
November, December, January, February
Distribution or origin
Japan (southwestern Hokkaido, Honshu: heavy-snow areas on the Sea of Japan side)
Growth form
Branching
Leaf shape
Simple leaf (unlobed)
Leaf arrangement
Opposite
Leaf margin
Serrate
Inflorescence
Panicle
Number of petals
4
Flower color
Brown, Purple
Fruit color
Red
Leaf color
Green
Availability of seeds and plants
Low
Form sold
Seedlings
Propagation
Seed, Cuttings
Sun exposure
Full sun, Partial shade, Shade
Water needs
Moderate, Moist
Soil needs
Required
Tolerance
Shade tolerance
Suitable uses
Potted plant, Parks and gardens
Diseases
Brown spot, Anthracnose
Pests
Scale insects, Broad mites, Aucuba gall midges
Uses
Medicinal
Designated plants
Endemic to Japan
Japan Flower Trade Code
54895

Translated from our Japanese encyclopedia. If anything differs, the Japanese page is correct.

Sponsored