Propagation
Surface sow fresh seed during spring in a well-drained media, and maintain a temperature of 16º to 18º C. (61º to 64º F). Prick out and pot up when they are large enough to handle then grow on before planting out. 

Note: Eucalyptus and Corymbia species are fast-growing and should be planted when the young in order to establish a strong root system.

The Tasmanian Blue Gum has naturalised in many non-native regions that include southern Europe, Southern Africa, New Zealand and the western United States and is primarily used as pulp wood or fuelwood. In California it is considered as an invasive species that displaces native plant communities and becomes a major fire hazard.

Botanic information
Leaf: The sessile bluish green to glaucous elliptical-ovate juvenile leaves are up to 120 mm (4¾ in) long by 70 mm (2⅔ in) wide and are strongly discolours. They are arranged oppositely and have an abrupt acuminate to mucronate apex. The dark green leathery textured intermediate leaves are broad lanceolate and the adult leaves are falcate to narrow lanceolate, both with a short petiole. They are concolorous, strongly aromatic and the apex is acuminate.

Flower: The extremely glaucous ribbed turbinate to quadrangular buds are warty and are up to 18 mm (⅞ in) wide with a flattened operculum. The pedestal is short or absent and the flowers open with exserted almost white stamens. They appear solitary or in a small cluster of three from early spring to early summer.

Fruit: The globular to hemispherical woody capsule is to 25 mm (1 in) wide with 4 or more distinct ribs. The hypanthium is glaucous and the level or ascending disk is broad with slight lobes that partially cover the 4-5 valves that are level or slightly exserted. Each capsule contains numerous tiny seeds that are very viable.

Note:
Tasmanian Blue Gum is sensitive to waterlogged or saline soils and care should be taken when selecting the site as the roots can damage drains on lift concrete. The flowers are used as the floral emblem for Tasmania and were officially proclaimed on the 27th of November 1962.

General pruning information
Eucalyptus species require little pruning apart from removal of damaged or dead wood, which should be taken off at the collar. If the tree is cut back hard it will produce epicormic shoots and the crown may be lifted or thinned by removal of selected branches.