| Leaves:
Needles borne singly; about 1" long; evergreen; blue-white to
dark green; 4-angled; sharp pointed; extend at right angles all around
twig; very fragrant when crushed.
Twigs/buds: Twigs glabrous; leaves on a short stalk that remains
part of the twig, so twig rough. Buds with scales that tend to turn
out into a rosette, especially in spring.
Flowers/fruit: Fruit a papery cone that hangs down; about 2-1/2"
to 4" long; light chestnut-brown; papery scales are slightly
round-toothed at tip.
Bark: Light to dark gray; made-up of thin scales; wide, thick ridges
on older trees.
Wood: Minor importance; similar to Engelmann spruce.
General: Utah's official state tree. Native to Utah, the Rocky
Mountains and Intermountain states. Slow growing. Likes moisture
and good soil; may not do well with extreme heat or hot, dry winds.
Wind-throw can be a problem. Intermediate shade tolerance. Landscape Use: Beautiful, slow-growing tree but allow enough room--can
eventually get quite tall and wide. Best if it is allowed to keep
branches and foliage right to the ground. Will as often be green
as blue in nature, but blue-foliage cultivars are available. Good
visual, sound, and wind screen. Cooley spruce gall adelgid can cause
unsightly brown galls to form on twig tips on blue spruces in the
landscape. This is a very good tree, but it is over-used in many
areas. Zones 2-7.
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