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Lemon-scented gum

Corymbia citriodora

iNaturalist Wikipedia

A towering icon of the Australian landscape, the Lemon-scented gum is famous for its luminous white bark and refreshing citrus fragrance. It stands as a vibrant hub for pollinators, offering a year-round spectacle of color and life.

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0 Habitats

Quick Identification

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Size

Height 25–50 m (82–164 ft); Trunk diameter up to 1.2 m (4 ft)

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Colors

Smooth bark in shades of white, cream, and pale pink; narrow grey-green to dark green leaves

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Key Features

Strong, distinct lemon aroma when leaves are crushed
Uniformly smooth, powdery bark shed in thin curly flakes
Clusters of three white flowers
Large, woody urn-shaped fruit (gumnuts)

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 9 AM - 5 PM

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Season Year-round; Flowering peaks June-November

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Diet Autotrophic; produces energy via photosynthesis using sunlight, water, and soil nutrients like nitrogen and phosphorus.

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Habitat Open woodlands, dry sclerophyll forests, and spacious suburban parks or large residential lots.

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Where Does the Lemon-scented gum Live?

Native to the tropical and subtropical regions of north-eastern Australia, the Lemon-scented gum is most at home in the coastal and sub-coastal ranges of Queensland. It has since been widely naturalized across other parts of Australia, particularly in New South Wales and Western Australia, where it thrives in well-drained soils. Beyond its native shores, this adaptable species has been introduced to similar climates worldwide, including California in the United States, South Africa, and various Mediterranean countries, where it is prized for both its timber and aromatic oils.

Basemap © OpenStreetMap contributors

6 Countries

1.1M km² Range

Least Concern Conservation

AU Australia

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US United States

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ZA South Africa

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ES Spain

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IT Italy

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iNaturalist / Verified observation data

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Behavior

The Lemon-scented gum is a fast-growing, elegant evergreen known for its remarkably straight trunk and high, open canopy. One of its most distinctive behaviors is its annual bark-shedding process. The tree peels away its old, weathered outer layers in thin, papery flakes to reveal a fresh, luminous surface that can range from a brilliant white to a soft, coppery pink. This shedding isn't just for show; it helps the tree rid itself of potential parasites and epiphytes that might cling to its surface.

In the wild and in backyard settings, this species acts as a massive biological clock, signaling the seasons through its heavy flowering and seed dispersal. While it is a beloved ornamental tree due to its fragrance and aesthetic, it is also known for "summer branch drop," a unique physiological response where it may shed a heavy limb during extreme heat or drought to conserve its internal water pressure. In a garden ecosystem, it serves as a primary hub for social interaction among nectar-feeding birds and nocturnal mammals.

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Camera Tips

To capture the full majesty of a Lemon-scented gum, place your camera at a significant distance—at least 20 feet—from the base of the trunk. Use a wide-angle lens and mount the camera at a height of 4–5 feet, angled slightly upward. This captures the dramatic transition from the stark white trunk to the delicate green canopy. Because the white bark is highly reflective, avoid using a strong flash at night, as it will likely result in a "white-out" image; instead, rely on ambient moonlight or long-exposure settings.

For those interested in the wildlife that visits the tree, the best strategy is to aim your camera at a specific limb or a cluster of lower blossoms during the winter and spring flowering months. These flowers are a magnet for honeyeaters, lorikeets, and flying foxes. Set your camera to a high-speed trigger or burst mode to catch the fast movements of these pollinators as they move between the white flower clusters. Positioning the camera to face east or west can help you catch the "golden hour" light, which turns the white bark into a stunning glowing pink.

Don't forget the ground level! During the bark-shedding season, the base of the tree becomes a hub of activity for insects and small reptiles hiding under the fallen flakes. A macro-capable camera placed near the roots can capture fascinating footage of the micro-ecosystem that thrives in the leaf litter and bark piles. If you are using a trail camera with time-lapse capabilities, set it to one photo every 30 minutes over several days to document the dramatic way the bark curls and peels away from the trunk.

Similar Species

Species that look similar or are commonly confused with Lemon-scented gum.

Spotted Gum

Features mottled, dimpled bark with grey and cream patches rather than uniform white bark, and lacks the lemon scent.

Ghost Gum

Typically shorter with a more twisted trunk and lacks the distinct citrus aroma in the foliage.

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Frequently Asked Questions

As a plant, the Lemon-scented gum is most biologically active during daylight hours when it performs photosynthesis. However, its fragrance is often strongest in the evening or after rainfall, and it is a major site for nocturnal wildlife activity, such as possums and bats, during the night.

To grow a Lemon-scented gum, you need a large space with full sun and well-draining soil. They are best started from seedlings in late spring. Keep in mind their mature size; they need plenty of room away from power lines and house foundations.

Lemon-scented gums do not eat food like animals; they are primary producers that create their own energy from sunlight. They absorb essential minerals and water through their deep root systems, thriving best in soils with moderate organic matter.

Yes, they are very common in suburban parks and large gardens due to their beautiful appearance and scent. However, because they can grow very large and occasionally drop limbs, they are usually found in larger public spaces rather than small urban backyards.

The easiest way is to look at the bark and smell the leaves. Lemon-scented gum has a uniform, smooth white to pink bark, while the Spotted Gum (Corymbia maculata) has a characteristic mottled or 'spotted' appearance. Crushing a leaf will also reveal the unmistakable lemon scent unique to C. citriodora.

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