SelecTree: Tree Detail
Photo Locations: University of Arizona - Tucson, AZ, Cal Poly State University - San Luis Obispo, CA, UC Santa Cruz Arboretum - Santa Cruz, CA and Phoenix, AZ
Hardiness estimate: 5-10 degrees F. Produces little litter. Can grow much taller in its native habitat.
Has fragrant Leaf.
Native to Australia.
Erect or Spreading with a High Canopy.
Has Evergreen foliage.
Height: 35 - 50 feet.
Width: 25 feet.
Growth Rate: 36 Inches per Year.
Longevity 50 to 150 years.
Leaves Linear, Bluish Green or Silver or Gray Green, No Change, Evergreen.
Cream or White. Flowers in Spring or Winter. Has perfect flowers (male and female parts in each flower).
Brown or Mostly Green Capsule, Very Small (Under 0.25 inches).
Bark Dark Gray, Fibrous, Furrowed, Rough or Smooth.
Shading Capacity Rated as Dense in Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 5 - 6 and 8 - 24.
USDA Hardiness Zones 8 - 10.
Exposure Full Sun to Partial Shade.
Moist to Dry Soil.
Clay, Loam or Sand Texture.
Slightly Acidic to Highly Alkaline Soil pH.
Salinity Tolerance is Good to Moderate Inland.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Resistant to Texas Root Rot and Verticillium. Susceptible to Beetle Borers, Armillaria and Root Rot.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium.
Root Damage Potential Rated as Moderate.
None Known Health Hazard.
Not Deer Palatable.
Cite this tree:
SelecTree. "Eucalyptus coolabah Tree Record." 1995-2020. Aug 9, 2020.
< https://selectree.calpoly.edu/tree-detail/eucalyptus-coolabah >