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Abies homolepis

Common name: Nikko Fir Family: Pinaceae
Author: Siebold.&Zucc. Botanical references: 11, 58, 200
Synonyms:  
Known Hazards: None known
Range: E. Asia - central and southern Japan.
Habitat: Cool wet mountainsides[58, 200]. In mountain forests at elevations of 1000 - 1800 metres, generally growing in the intermediate zone between A. firma and A. veitchii[275].
Edibility Rating (1-5): 0Medicinal Rating (1-5):0

Other Possible Synonyms:From various places across the web, may not be correct. See below.
A. brachyphylla[G]
Epithets:From a Dictionary of Botanical Epithets
abies = fir; homolepis = with similar scales;
Systematics:From a USDA Plants Database
Order: Pinales. Pine family

Physical Characteristics

An evergreen tree growing to 36m by 6m at a medium rate. It is hardy to zone 4. It is in leaf all year, in flower from May to June, and the seeds ripen in October. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind. We rate it 0/5 for edibility and 0/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay soil. The plant prefers acid and neutral soils. It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It requires moist soil. It can tolerate atmospheric pollution.

Habitats and Possible Locations

Woodland, Canopy.

Edible Uses

None known

Medicinal Uses

Disclaimer

None known

Other Uses

Wood.

Wood - light, soft, coarse grained. Used for construction, pulp etc[61].

Cultivation details

Prefers a good moist but not water-logged soil[1]. Grows well in heavy clay soils. Very shade tolerant, especially when young, but growth is slower in dense shade[81]. Intolerant of atmospheric pollution[1]. This species is the most tolerant of the genus to atmospheric pollution[185, 200]. Prefers slightly acid conditions down to a pH of about 5[200]. Prefers growing on a north-facing slope[200].
This species thrives in Britain, succeeding in the drier east of the country though growing better in the moister west and at its best in the Perthshire valleys of Scotland[11]. Growth is fairly good, averaging around 30 cm per year for at least the first 100 years[185]. Increase in girth is also reasonable, 1.2 metres in 36 years has been recorded[185].
Trees should be planted into their permanent positions when they are quite small, between 30 and 90cm in height. Larger trees will check badly and hardly put on any growth for several years. This also badly affects root development and wind resistance[200].
The flowers are produced in axils of the previous year's shoots[275].
Plants are strongly outbreeding, self-fertilized seed usually grows poorly[200]. They hybridize freely with other members of this genus[200].

Propagation

Seed - sow early February in a greenhouse or outdoors in March[78]. Germination is often poor, usually taking about 6 - 8 weeks[78]. Stratification is said to produce a more even germination so it is probably best to sow the seed in a cold frame as soon as it is ripe in the autumn[80, 113]. The seed remains viable for up to 5 years if it is well stored[113]. When large enough to handle, prick the seedlings out into individual pots and grow them on for at least their first winter in pots. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
Alternatively, if you have sufficient seed, it is possible to sow in an outdoor seedbed. One report says that it is best to grow the seedlings on in the shade at a density of about 550 plants per square metre[78] whilst another report says that they are best grown on in a sunny position[80].

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

References for the family Pinaceae.

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[11] Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981
A classic with a wealth of information on the plants, but poor on pictures.

[58] Ohwi. G. Flora of Japan. (English translation) Smithsonian Institution 1965
The standard work. Brilliant, but not for the casual reader.

[61] Usher. G. A Dictionary of Plants Used by Man. Constable 1974 ISBN 0094579202
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.

[78] Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.

[80] McMillan-Browse. P. Hardy Woody Plants from Seed. Grower Books 1985 ISBN 0-901361-21-6
Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.

[81] Rushforth. K. Conifers. Christopher Helm 1987 ISBN 0-7470-2801-X
Deals with conifers that can be grown outdoors in Britain. Good notes on cultivation and a few bits about plant uses.

[113] Dirr. M. A. and Heuser. M. W. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press 1987 ISBN 0942375009
A very detailed book on propagating trees. Not for the casual reader.

[185] Mitchell. A. F. Conifers in the British Isles. HMSO 1975 ISBN 0-11-710012-9
A bit out of date (first published in 1972), but an excellent guide to how well the various species of conifers grow in Britain giving locations of trees.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

Readers Comments

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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.

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