Sitka Spruce
Picea sitchensis
The world's largest spruce and a giant of the Pacific coastal fog belt, fast-growing and salt-tolerant with stiff, painfully sharp blue-green needles. Its light, strong, resonant wood is famous for aircraft framing and musical instrument soundboards; it needs cool, humid coastal conditions and struggles inland.
Field reference
Family
Pinaceae
Growth rate
Fast
Mature size
100–200 ft tall, 30–40 ft spread
Hardiness zone
6–8
Soil preference
Moist to wet, cool coastal soils; thrives in fog-belt humidity and salt air
Sun
Full sun to part shade
Pruning window
Late dormant season; very sharp needles — wear gloves
Wood properties
Light, strong, straight-grained spruce (~0.36 SG) with an exceptional strength-to-weight ratio — historic aircraft and soundboard (guitar/piano) wood. Tall stems; stiff, very sharp needles.
Native range
Pacific coast fog belt, from Alaska to Northern California, rarely far from the ocean
Green weight
33 lb/ft³
Pests & diseases to watch
Common questions
Why are Sitka spruce needles so sharp?
Sitka spruce has notably stiff, sharp, flattened needles — a quick way to tell it from softer-needled hemlocks and firs. Wear gloves when handling or pruning it.
Can I grow Sitka spruce away from the coast?
Generally no — it depends on the cool, humid, foggy maritime climate and salt-laden air of the immediate coast. Inland heat and dry air stress it badly, so it is rarely successful far from the ocean.
Related species in Pinaceae
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