| Botanic name | Eucalyptus torquata |
| Other names | Coral gum, Coolgardie gum |
| Main Origin | Southern Western Australia |
| Mature size | 3 – 8 m x 6 – 10 m (w x h) |
| Mature form | Upright with dense & broad canopy |
| Foliage | Long, spear- or lance-shaped, grey-, blue- or olive-green |
| Growth rate | Moderate to fast |
| Position | Full sun |
| Soil | Adapts to various well-drained soils |
| Water | Minimal, occasional deep watering |
| Climate | Arid, semi-arid, Mediterranean, warm temperate |
| Flower | Coral pink, red, orange, or cream, from spring to summer |
| Use | Feature tree, windbreaks, screening, avenue planting |
| Notes | Intolerant of high humidity and moisture |
IN THIS ARTICLE
Origin and distribution
Eucalyptus torquata (Coral Gum) is a magnificent tree native to the harsh, desert-like terrains of southern Western Australia, spanning rocky outcrops and open woodlands between the Mediterranean zone and arid interior.
This species has been widely planted in Australia, mainly in drier regions with lower humidity levels. It is one of the favourite trees in arid and semi-arid zones.
Growth and care
Eucalyptus torquata thrives in open and sunny locations with hot and dry summers and cool, moist winters. Mature trees can tolerate moderate frost but cannot live in prolonged low temperatures below 10°C. Young trees are less tolerant of frost.
In its habitat, Eucalyptus torquata is found on well-drained sandy, clay, rocky, or stony soils with a slightly alkaline pH. This makes it ideal for gardens with alkaline soils, where other eucalypts might struggle. That said, Coral Gum can flourish in neutral or slightly acidic soils.
Once established, this plant is highly adaptable to dry conditions. It dislikes high humidity and is intolerant of damp soil. Watering should be minimal for established plants and is only required during prolonged dry periods.
If planting in heavier soil, amend it with coarse grit (not sand) and aged compost to enhance drainage and overall soil quality.
Eucalyptus torquata can grow in poor soil. Fertilisation is often not necessary. However, if planting in degraded, nutrient-deficient soil, add aged compost to enrich the soil. If a fertiliser is used, opt for one that is low in phosphorus and apply it sparingly.
Eucalyptus torquata does not require pruning. Its natural form is compact and attractive. However, it responds well to pruning. Pruning can be performed in winter to remove undesired or dead branches and rejuvenate the tree.
Features
Eucalyptus torquata is a small to medium-sized, upright tree. It has a dense, spreading canopy that is flat-topped or rounded, supported by a greyish-black trunk with rough, flaky, non-peeling bark. The upper branches are smooth and grey-brown.
The tree often appears somewhat stout because of the broad, bushy crown. In some instances, the foliage can be close to the ground. This form offers great visual appeal with plentiful shade and comfort during warm seasons.
The foliage of Eucalyptus torquata highlights its unique appeal. Its leaves are often narrow, long, with a spear or sickle-shaped, with a pastel grey, blue, or olive-green colour. The end branches and twigs are reddish or orange and contrast nicely with the leaves.
The highlight of Eucalyptus torquata is its dazzling blossom. Profuse clusters of red, orange, or green lantern-like buds emerge with interesting J-shaped caps, followed by large, vibrant flowers in spring and summer.
Flowers are often coral pink but can be creamy white, orange, or red. These flowers are nectar-rich and attract birds, bees, and pollinators alike. The blooming occurs sporadically throughout the rest of the year.
Landscape uses
Eucalyptus torquata is prized for its remarkable ornamental appeal and ability to withstand drought conditions, making it a superb choice for sustainable, water-wise gardens.
The plant can be regularly pruned to manage its size. It can also be grown in a sizeable container with good drainage.
It is commonly planted as a feature ornamental tree in dry residential gardens. With unobtrusive roots and tolerance to pollution, it is highly popular as a shade tree on streets and roadsides in drought-prone inland areas.
With large, strong branches and dense foliage, Eucalyptus torquata is also a prime candidate for windbreaks and tall screening.
Coral gum is a well-known rich nectar and pollen producer. It supports local wildlife, including native bird species and other important pollinators, especially bees.
Hybrid Coral Gum (Eucalyptus ‘Torwood’)
Hybrid Coral Gum, or Eucalyptus ‘Torwood’, is one of the small eucalyptus trees for hot and dry regions. It is a natural hybrid between Eucalyptus torquata and Eucalyptus woodwardii. Both species are endemic to southern Western Australia.
As a beautiful blend of both species, Hybrid Coral Gum is a small tree that reaches up to 8 meters in height. It also showcases amazing foliage and flowers, a compact tree form with a broad canopy, and exceptional drought hardiness.
However, this hybrid has smooth, sometimes orange, bark distinct from the classic Coral Gum, whose bark often appears greyish-black, rough, and fissured.
