WorldFloraDB - Picea breweriana

Characteristics

Trees to 40m; trunk to 1. diam., typically buttressed; crown conic. Bark gray to brown. Branches drooping; twigs pendent, elongate, slender, gray-brown, finely pubescent. Buds gray-brown, 5--7mm, apex rounded. Leaves 1.5--3cm, flattened or broadly triangular in cross section (abaxial surface rounded or slightly angular), rather rigid, abaxial surface dark green with stomatal bands absent, adaxial surface glaucous with conspicuous stomatal bands separated by slight ridge or angle, apex blunt (especially on older leaves). Seed cones 6.5--12cm; scales fan-shaped, 15--20 ´ 15--20mm, rigid, margin at apex entire to slightly erose.

More

A tree. It grows 9-15 m high and spreads 3-4.5 m wide. The branches dip then turn up at the end. The shoots hang giving a weeping appearance. The leaves are stiff, fleshy needles which come out almost at right angles. The leaves are blue-green. The male flowers are orange and the female flowers are greenish. The cones are slightly curved and ripen to brown in the autumn.

Life form

perennial

Growth form

tree

Growth support

free-standing

Foliage retention

evergreen

Sexuality

monoecy

Pollination

anemogamy

Spread

-

Mature width (meter)

3.0 - 4.5

Mature height (meter)

15.0

Root system

-

Rooting depth (meter)

0.5

Root diameter (meter)

-

Flower color

-

Blooming months

Jan	Feb	Mar
Apr	May	Jun
Jul	Aug	Sep
Oct	Nov	Dec

Fruit color

Fruiting months

-

Nitrogen fixer

-

Photosynthetic pathway

c3

Environment

It is a temperate plant. It is frost hardy. It does best in moist soil. It can stand shade or sun. It grows naturally in mountains in California in the United States. It grows between 1,200-2,100 m altitude. It suits hardiness zones 2-8. Arboretum Tasmania.

More

Usually on dry mountain ridges and peaks near the timber line, forming small groves around 2100 metres, though the best specimens are found in deep moist well-drained soils.

Light
Soil humidity
Soil texture
Soil acidity
Soil nutriment	-
Hardiness (USDA)

Usage

Uses	environmental use wood
Edible	barks flowers seeds shoots
Therapeutic use	-
Human toxicity	-
Animal toxicity	-

Cultivation

Can be grown by cuttings or seedlings. Seeds needs stratification.

Mode	cuttings seedlings
Germination duration (days)	30 - 60
Germination temperacture (C°)	12
Germination luminosity	-
Germination treatment	stratification
Minimum temperature (C°)	-
Optimum temperature (C°)	-
Size	-
Vigor	-
Productivity	-