EVERGREEN

Plant Encyclopedia

Cephalotaxus harringtonia var. nana

Cephalotaxus harringtonia var. nana ("Haiinugaya")

Japanese name: ハイイヌガヤ (這犬榧)
Scientific name: Cephalotaxus harringtonia var. nana

Cephalotaxus harringtonia var. nana

[Overview]
An evergreen coniferous shrub 1–2 m tall, adapted to heavy-snow regions.
The lower part of the trunk creeps along the ground.
It branches well, and the branches grow upward.
The leaves are alternate, but because their bases are twisted they appear to be arranged in two horizontal rows.
The leaves are linear, about 2.5–3.5 cm long and 0.3 cm wide, with short pointed tips that do not hurt when touched.
The upper surface of the leaf is dark green, and the underside has white stomatal bands.
It is dioecious.
The male flowers are spherical and grow in the leaf axils of the previous year's branches.
The female flowers (ovules) are ovate and grow singly or in pairs in the leaf axils at the tips of the previous year's branches.
The seeds are elliptical, about 2.5 cm long, enclosed in an aril, and ripen in October of the following year.
The outer seed coat turns red when ripe.

[Cultivation]
Propagate by cuttings.
It dislikes being transplanted somewhat.
It prefers a sunny, well-drained, moderately moist, fertile site.
It is shade tolerant and can endure about partial shade.
For potted plants, and for plants in the ground less than 2 years after planting, water thoroughly when the soil surface dries; for established plants in the ground, rainfall is sufficient.
Apply organic fertilizer around the plant as fertilizer in winter.
There are no particular pests or diseases.

Details

Names
Japanese: ハイイヌガヤ(這犬榧)、アイヅイヌガヤ(会津犬榧)、エゾイヌガヤ(蝦夷犬榧)
Life form
Shrub
Evergreen / deciduous
Evergreen
Leaf type
Needle-leaved
Habit
Terrestrial
Planting (or sowing) season
March, April, September, October
Flowering season
March, April
Fruiting season
October
Distribution or origin
Japan (southwestern Hokkaido, mainly the Sea of Japan side of Honshu, part of Shikoku)
Growth form
Branching
Height
1000–2000 mm
Leaf shape
Linear
Leaf arrangement
Alternate
Leaf color
Green
Availability of seeds and plants
Low
Form sold
Seedlings
Propagation
Cuttings
Sun exposure
Full sun, Partial shade
Water needs
Moderate
Soil needs
Required
Tolerance
Cold tolerance, Snow cover tolerance, Shade tolerance
Suitable uses
Parks and gardens
Hardiness zone
6a–8b
Designated plants
Endemic to Japan
Japan Flower Trade Code
54244

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

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