Plant encyclopedia›Australian mountain ash

Australian mountain ash

Also known as: Australian mountain oak; giant gum

A very large, evergreen tree with a mature height of 90m (300ft) rivalling giant redwoods for size and making it suitable for only the largest gardens or parkland. The rough-textured bark on the trunk does not shed and is greyish brown. On the branches, the bark sheds in strips to reveal new bark beneath in cream, green and grey. The juvenile foliage and adult foliage are both lance-shaped and green. Flowers are white and appear in autumn. The foliage and stems are aromatic of eucalyptus and balsam when crushed

Scientific classification

Species: Australian mountain ash (Eucalyptus regnans)
Genus: Eucalyptus
Family: Myrtaceae

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Toxicity: Trees
Plant type: Higher than 12 metres
Height: wider than 8 metres
Spread: Evergreen
Foliage: Bushy · Columnar upright
Habit: Spring · Summer · Autumn · Winter
Season of interest: Full sun
Sunlight: Information to be completed
Ideal temperature

Australian mountain ash pictures

Distribution of Australian mountain ash

Distribution map

Australia

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Culture

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Toxicity

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Quick identification of Australian mountain ash

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Australian mountain ash care guide

Moderate regular watering, allowing brief slight drying between soakings
Watering: Full sun
Sunlight: Information to be completed
Ideal temperature

Watering

Moderate regular watering, allowing brief slight drying between soakings

Fertilizing

Balanced perennial feed every four weeks from spring through summer

Pruning

Little pruning is needed. Remove diseased, damaged, crowded or crossing shoots and unwanted growth. Timing depends on the plant: generally late winter or early spring; plants prone to bleeding and deciduous magnolias need different timing, and deciduous azaleas and lilacs are pruned after flowering.

Propagation

Propagate by seed at 13-18°C in spring and summer

Growing

Grows best in full sun and a mildly acidic, neutral, or mildly alkaline soil that is moist but well-drained. Able to withstand cold temperatures when mature, but shelter from cold, drying winds especially when young. See eucalyptus cultivation

More growing and care information →