Picea sitchensis (Bong.) Carrière
Pinaceae (Pine Family)
USDA Symbol: pisi
The worlds largest spruce, with tall, straight trunk, from buttressed base, and broad, open, conical crown of horizontal branches. Sitka spruce is a 50-100 ft. tree wide spreading, rigidly branched and drooping branchlets. Bark is scaly and dark red-brown. Needles are green on the lower surface, white above.
The main timber tree in Alaska, Sitka Spruce produces high-grade lumber for many uses and wood pulp for newsprint. Special products are piano sounding boards, boats, and food containers. It was formerly used in aircraft construction.
From the Image Gallery
No images of this plant
Plant CharacteristicsDuration: Perennial
Leaf Complexity: Simple
Size Class: 72-100 ft.
Bloom InformationBloom Color: Yellow
Bloom Time: Apr , May
DistributionUSA: AK , CA , OR , WA
Native Distribution: Pacific Coast region from s. AK through w. B.C. to n.w. CA
Native Habitat: Moist to swampy coastal areas
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Moist , Wet
CaCO3 Tolerance: Medium
Soil Description: Moist to wet soils.
Conditions Comments: Susceptible, especially in the Pacific Northwest, to defoliation by red spider and to malformation by spruce gall.
PropagationDescription: Sitka spruce is propagated from seed which is slow to germinate. Cuttings root in low percentages.
Seed Collection: Not Available
Seed Treatment: No treatment is necessary, but seeds may benefit from 1-3 month stratification.
Commercially Avail: yes
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Santa Barbara Botanic Garden - Santa Barbara, CA
Recommended Species Lists
Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.View Recommended Species page
Additional resourcesUSDA: Find Picea sitchensis in USDA Plants
FNA: Find Picea sitchensis in the Flora of North America (if available)
Google: Search Google for Picea sitchensis
MetadataRecord Modified: 2007-01-01
Research By: TWC Staff