SelecTree: Tree Detail
SYDNEY RED GUM
Photo Locations: Cal Poly State University - San Luis Obispo, CA, Pasadena, CA, Orange, CA and Los Angeles County Arboretum - Arcadia, CA
A beautiful, underused, copper-barked tree, closely related to Eucalyptus, which can grow to 100 feet tall in the right environment. Unlike Eucalyptus, all twelve Angophora species make true petals and have opposite adult leaves. Angophora costata has no HPWRA (Hawai'i Pacific Weed Risk Assessment) score.
An Angophora costata in Griffith Park: Chevy Chase Dr, Verdant St is registered as a California Big Tree. It measures 81 feet high, with a trunk circumference of 204 inches and a crown spread of 90 feet.
Additional Common Names
SYDNEY RED GUM, RUSTY GUM, SMOOTH-BARKED APPLE GUM, GUM MYRTLE, ROSE GUM
Erect or Spreading with a High Canopy.
Conical or Rounded Shape.
Has Evergreen foliage.
Height: 50 - 65 feet.
Width: 30 - 50 feet.
Growth Rate: 24 Inches per Year.
Longevity 50 to 150 years.
Leaves Lanceolate, Green, No Change, Evergreen.
Flowers Showy. White. Flowers in Summer. Has perfect flowers (male and female parts in each flower).
Brown Capsule, Small (0.25 - 0.50 inches), fruiting in Fall.
Bark Striking, Cream, Light Green, Pink or Multicolored, Exfoliating or Smooth.
Shading Capacity Rated as Moderately Dense in Leaf.
Litter Issue is Bark.
Tree Site Conditions & Constraints
Sunset Zones 16 - 17 and 21 - 24; H1, H2.
Exposure Full Sun.
Moist to Dry Soil.
Clay, Loam or Sand Texture.
Neutral to Highly Alkaline Soil pH.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Resistant to Armillaria.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium.
Root Damage Potential Rated as Moderate.
None Known Health Hazard.
Attracts Birds and Bees.
Cite this tree:
SelecTree. "Angophora costata Tree Record." 1995-2020. Sep 29, 2020.
< https://selectree.calpoly.edu/tree-detail/angophora-costata >