Abies homolepis - Nikko Fir

Habitat

Exposition

Toutes expositions

Humidité

Humidité moyenne.

Sol

Tous sols. Tolère les sols très argileux.

pH

Non calcaire

Rusticité

Zone 4

Habitat originel

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].

Origine géographique

E. Asia - central and southern Japan.

Autres usages

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

Culture

• Prefers a good moist but not water-logged soil [1].
• Pousse bien dans les sols très argileux .
• 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 .
• Les arbres trop âgés se porteront mal et ne se développeront pas pendant plusieurs années .
• Cela affecte aussi dramatiquement le dévelopement des racines et la résistance au vent [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].
• Ils s'hybrident librement avec les autres membres du genre [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 .
• Plantez les à leurs positions définitives à la fin du printemps ou au début de l'été, après les dernières gelées .
• 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].