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Picea pungens
Picea pungens

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Zones 2B, 3-7, 14-17
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Full, Partial
Regular Water
Moderate

Picea breweriana

Brewer’s Weeping Spruce
Pinaceae
Evergreen, Trees

PICEA

Like firs (Abies), spruces are pyramidal trees, with branches arranged in neat tiers. Unlike firs, however, their cones hang down, and their needles are stiffer and attached to branches by small pegs that remain behind after the needles drop. Most spruces are tall timber trees, but dwarf varieties are lovely in home gardens. Plants have shallow root systems and so need a reasonably cool location. Spruces generally grow best where summers are cool or mild; most suffer in heat and humidity. P. pungens tolerates dry conditions better than the other species.

Spruces can be grown in containers for years as living Christmas trees and moved indoors for up to a week. In coldest climates, move potted trees to a protected location for winter.

Check spruces for small, dull green aphids in winter; if they’re present, take control measures at that time to prevent defoliation in spring. Pine needle scale (look for flat, white scale insects on needles) may encourage sooty mold. In Rocky Mountain states, spruces may be bothered by spider mites and tussock moths. Cooley spruce gall adelgid is an aphidlike insect that attacks many spruce trees, especially in the Pacific Northwest and mountain areas. Its feeding causes green, conelike galls to form at ends of new growth. These galls gradually turn light purplish tan and then brown by autumn. Douglas fir is an alternate host for these pests, but it doesn’t develop galls. Contact your local Cooperative Extension Office for control measures.

Picea breweriana

Native to the Siskiyou Mountains in California and Oregon. Grows to 30–50 ft. tall and 10–12 ft. wide in cultivation (to 80–120 ft. tall in native habitat). Stiff, upright pyramid in youth; branchlets become pendulous as the tree ages. Very striking form in maturity, with 7–8-ft.-long branchlets hanging vertically from the main branches. Needles are shiny deep green above, gray green beneath. More tender than most spruces. Requires regular water and cool temperatures.

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