Corymbia (Eucalyptus) citriodora
[optinlocker]Lemon-scented Gum is one of the most popular Australian trees grown in Melbourne. Originating from a very restricted area in Queensland on the Tropic of Capricorn, Lemon-scented Gum has grown very well on many Melbourne sites. This tree is typified by its tall, upright habit, long elegant foliage, and smooth grey bark. Further, the lemon-scented foliage and flowers are of great interest throughout the year.
C. citriodora seems to grow on most sites in Melbourne. It is tolerant of dry, sandy sites, seems to tolerate moist, high-clay-fraction locations, and grows rapidly both with and without water. Occasionally it may be troubled by lerp, but is not badly affected at any time. C. citriodora is intolerant of frost when young, and trees less than 1m tall can be badly affected in northern and highland areas.
There are no selections of C. citriodora currently available, although performance with this tree may vary; this results from interbreeding between C. citriodora and the closely related C. maculata (Spotted Gum). Frequently trees with strongly-spotted trunks may grow in a seedling tray of C. citriodora, showing the obvious hybridisation between these two species. To assure best growth and true-to-type plants, Metropolitan Tree Growers are using seed from the CSIRO orchard, located in Castle Hill NSW.
Corymbia citriodora ‘Dwarf’ is a selected form of Lemon-scented Gum that has been grafted at Humphris Nurseries to allow the clonal expression of its desirable attributes. Grafted trees are typically smaller than seedling grown specimens.
Corymbia citriodora grafted Dwarf is expected to grow to around 7 m high in the Melbourne area. It will have the same environmental tolerances as the species but can be used in locations where space is more constrained.[/optinlocker]
Typical mature height: to 20m in Melbourne
Useful in: avenues, parks
Sites for best growth: most soil types, full sun