SelecTree: Tree Detail
Photo Locations: Cal Poly State University - San Luis Obispo, CA, Strybing Arboretum - San Francisco, CA and The National Arboretum - Washington, DC
General NotesNeeds ample moisture.
Has fragrant Leaf.
Native to Western North America.
Erect and requires ample growing space.
Conical or Oval Shape.
Has Evergreen foliage.
Height: 80 - 160 feet.
Width: 20 - 40 feet.
Growth Rate: 24 Inches per Year.
Longevity Greater than 150 years.
Leaves Needle, Medium Green or Silver Gray, No Change, Evergreen.
Flowers Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).
Brown, Red or Yellow Cone, Very Large (Over 3.00 inches), fruiting in Fall or Winter.
Bark Purple or Red Brown, Scaly.
Shading Capacity Rated as Dense in Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 4 - 6 and 14 - 17.
USDA Hardiness Zones 6 - 9.
Exposure Full Sun to Partial Shade.
Clay, Loam or Sand Texture.
Highly Acidic to Slightly Alkaline Soil pH.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Susceptible to Aphids, Insect Galls and Scales, Oak Root Rot, Phytophthora, Root Rot, Rust and Sooty Mold.
Health, Safety & Environmental Concerns
Branch Strength Rated as Weak to Medium
Root Damage Potential Rated as Moderate.
Allergy Health Hazard.
Biogenic Emissions considered Moderate.
Fire Resistance is Unfavorable.
Desirable Wildlife Plant.
Not Deer Palatable.
Cite this tree:
SelecTree. "Picea sitchensis Tree Record." 1995-2017. Oct 20, 2017.
< http://selectree.calpoly.edu/tree-detail/picea-sitchensis >