SelecTree: Tree Detail
ISELI FOXTAIL COLORADO SPRUCE
Picea pungens 'Iseli Foxtail'
Photo Locations: The National Arboretum - Washington, DC and Heaps Peak Arboretum, San Bernardino National Forest
Branches droop but resist breakage.
Additional Common Names
ISELI FOXTAIL COLORADO SPRUCE, ISELI FOXTAIL COLORADO BLUE SPRUCE, ISELI FOXTAIL BLUE SPRUCE
Columnar or Conical Shape.
Has Evergreen foliage.
Height: 30 - 50 feet.
Width: 10 - 20 feet.
Growth Rate: 12 to 36 Inches per Year.
Leaves Needle, Green or Blue Green, No Change, Evergreen.
Flowers Inconspicuous. Orange, Green or Purple. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).
Brown Cone, Very Large (Over 3.00 inches), fruiting in Spring, Summer or Fall.
Bark Gray to Brown, Exfoliating or Scaly.
Shading Capacity Rated as Dense to Very Dense in Leaf.
Tree Site Conditions & Constraints
Sunset Zones 1 - 10 and 14 - 17.
USDA Hardiness Zones 4 - 8.
Exposure Full Sun to Partial Shade.
Well Drained Soil.
Clay, Loam or Sand Texture.
Acidic Soil pH.
Pests & Disease Information
Susceptible to Mites, Insect Galls, Budworm, Scales and Caterpillars, Canker and Rust.
Health, Safety & Environmental Concerns
Root Damage Potential Rated as Low.
Fire Resistance is Unfavorable.
Special Uses & Values
Specimen, Buffer Strip or Screen.
Cite this tree:
SelecTree. "Picea pungens 'Iseli Foxtail' Tree Record." 1995-2020. Apr 6, 2020.
< https://selectree.calpoly.edu/tree-detail/picea-pungens-iseli-foxtail >