Silver Dollar Gum ( Eucalyptus cinerea ) Exotic Live Tree 1′-2′ feet tall

The Silver Dollar Gum, scientifically known as Eucalyptus cinerea, is a fast-growing evergreen tree native to southeastern Australia. It is well known for its attractive, round, silvery-blue juvenile leaves, which give the tree its common name. Widely grown for ornamental purposes, floral arrangements, and landscape design, Eucalyptus cinerea is also valued for its aromatic foliage and tolerance to drought and poor soils.

The Silver Dollar Gum is a small to medium-sized tree that typically grows between 20 to 40 feet tall, though it can reach up to 60 feet under ideal conditions. It has a slender, upright growth habit with a rounded canopy. The trunk is often straight, with rough, fibrous bark that peels in strips. One of its most distinctive features is its juvenile foliage, which consists of nearly circular, silvery-blue leaves that grow in pairs along the stems. As the tree matures, the leaves become longer and lance-shaped, although many gardeners prune it regularly to maintain the decorative juvenile foliage.

The leaves are rich in essential oils and release a strong, refreshing eucalyptus aroma when crushed. This aroma, along with the silvery-blue coloration, makes the foliage highly desirable in floral design and for use in dried arrangements. The tree produces small white or cream-colored flowers, typically in clusters, during late winter to spring, which attract bees and other pollinators.

Eucalyptus cinerea thrives in warm, sunny environments and is best suited for USDA hardiness zones 8 through 11. It prefers full sun exposure and will not perform well in shade. The tree is adaptable to a wide range of soil types, including sandy, loamy, and even clay soils, as long as there is good drainage. It prefers slightly acidic to neutral soil but is not particularly sensitive to pH.

The Silver Dollar Gum is drought-tolerant once established and does not require frequent watering. However, young trees benefit from regular deep watering during their first year to establish a strong root system. Mature trees typically only need supplemental water during prolonged dry periods. Overwatering or poorly draining soil should be avoided, as it can lead to root rot.

Fertilization is usually not necessary for established trees growing in healthy soil. In nutrient-poor soil, applying a balanced, slow-release fertilizer in early spring can support growth. Compost or organic mulch around the base of the tree can help retain moisture and improve soil structure, but mulch should be kept away from direct contact with the trunk.

Eucalyptus cinerea requires minimal maintenance once established. It can be pruned to maintain shape, encourage bushier growth, or control height, especially if grown for ornamental foliage. Pruning is best done in late winter or early spring before new growth begins. If grown for cut foliage, regular coppicing (cutting the tree back to near ground level) every few years encourages vigorous regrowth with the desirable round juvenile leaves.

The tree is generally pest and disease resistant, although occasional issues with psyllids or scale insects may arise. These can usually be managed with neem oil or insecticidal soap if necessary. Fungal problems are rare but may occur in overly wet or poorly drained soils. Providing good air circulation and avoiding overwatering are effective preventive measures.

Propagation is usually done by seed, which germinates readily under warm, moist conditions. Seeds should be sown in well-draining soil and lightly covered. Germination typically occurs within 1 to 3 weeks. Eucalyptus cinerea does not usually produce true-to-type plants from cuttings, making seed propagation the most common method.

In landscaping, Eucalyptus cinerea is used for its striking foliage, aromatic qualities, and low maintenance needs. It works well as a feature tree in gardens, as a windbreak, or in large containers. Its distinctive appearance complements Mediterranean, Australian native, and drought-tolerant garden styles.

The leaves are commonly harvested for use in floral arrangements, wreaths, and crafts. They also contain eucalyptus oil, which is used in aromatherapy, cleaning products, and natural remedies. However, the concentration of oil in Eucalyptus cinerea is generally lower than in other eucalyptus species cultivated specifically for oil production.

The tree is not typically used for lumber or timber, as its wood is relatively brittle and often used for firewood or small projects. It is, however, appreciated for its environmental value in providing habitat and food for pollinators, and in some cases, koalas in its native range.