Flooded Gum Eucalyptus

Eucalyptus grandis

Light
Water
High water needs for a Phoenix landscape. Water deeply and regularly during establishment; mature trees still require substantial supplemental irrigation during hot, dry weather. Do not allow prolonged drought or persistent waterlogging.
Description
A very large Australian forest tree with a straight trunk, smooth white to pale gray upper bark, and rough bark near the base. Despite its name, flooded gum prefers moist, well-drained soil and is not a drought-adapted desert tree.
Bloom Time
Deciduous / Evergreen
Growth Rate
Flower Color
Foliage Color
Landscape Use
Toxic to pets & humans if ingested (essential oils)
Care Instructions

Light: Full sun; allow ample space away from buildings and overhead utilities.

Water: High water needs for a Phoenix landscape. Water deeply and regularly during establishment; mature trees still require substantial supplemental irrigation during hot, dry weather. Do not allow prolonged drought or persistent waterlogging.

Soil: Deep, fertile, well-drained soil with consistent moisture; slightly acidic to neutral soil is preferred. Phoenix soils with high alkalinity, salinity, or compacted caliche can limit performance.

Mature size: Approximately 100–160 feet tall and 30–60 feet wide under favorable conditions; potentially taller in its native habitat. Often smaller in arid landscapes.

Bloom: Generally fall through winter, although timing varies with climate and growing conditions. Flowering may be irregular in Phoenix.

Evergreen / deciduous: Evergreen.

Growth rate: Fast to very fast with sufficient water, warmth, and suitable soil.