Coolibah eucalyptus shade tree with rough grey-brown bark and an airy canopy of narrow grey-green leaves

Eucalyptus Coolibah

Eucalyptus microtheca
Categories:
Trees  ·  
Flowering Trees
Light
Full sun
Water
Water deeply and regularly during establishment, allowing soil to partially dry between irrigations. Once established, water deeply but infrequently; supplemental summer irrigation supports a fuller canopy in Phoenix.
Size
30-60 ft tall × 30-50 ft wide
Habit
Upright tree – single-trunk
Toxicity
Toxic — Pets & Humans
Description
Heat-tolerant Australian shade tree commonly called coolibah, with narrow gray-green leaves, rough gray-brown bark, and an airy canopy well suited to large Phoenix landscapes.
Bloom Time
Spring to summer
Deciduous / Evergreen
Evergreen
Special Features
Attracts Bees / Pollinators, Drought Tolerant, Heat Tolerant
Growth Rate
Fast
Growth Habit
Upright tree – single-trunk
Mature Size
30-60 ft tall × 30-50 ft wide
Flower Color
White
Foliage Color
Gray-green
Landscape Use
Desert / Xeriscape, Hedge / Screen, Poolside
Garden Style
Desert / Xeriscape, Hedge / Formal, Pollinator / Wildlife
Soil
Sandy / Rocky
Companion Plants
Autumn sage, Deer grass, Desert spoon, Red yucca, Texas sage
Toxic — Pets & Humans
Toxic to pets & humans if ingested
Care Instructions

Light: Full sun.

Water: Water deeply and regularly during establishment, allowing soil to partially dry between irrigations. Once established, water deeply but infrequently; supplemental summer irrigation supports a fuller canopy in Phoenix.

Soil: Adaptable to sandy, loamy, or clay soils, including moderately alkaline soils. Good drainage is preferred; avoid persistently saturated planting sites.

Mature size: Typically 40–60 feet tall and 25–40 feet wide; size varies with water availability and growing conditions.

Bloom: Small flowers generally appear in late spring to summer; timing varies with weather and irrigation.

Evergreen / deciduous: Evergreen.

Growth rate: Moderate to fast, especially with supplemental irrigation.