Eucalyptus globulus subsp. bicostata

Eucalyptus globulus subsp. bicostata

(Southern Blue Gum / Victorian Blue Gum)

Eucalyptus globulus subsp. bicostata is a tall, elegant eucalypt native to the cooler ranges of south‑eastern Australia. Known commonly as Southern Blue Gum, this subspecies is distinguished by its smooth blue‑grey to white bark that sheds in long ribbons, its broad, blue‑green juvenile foliage, and its long, sickle‑shaped adult leaves. Large, solitary white flowers appear seasonally, followed by distinctive warty, ribbed fruit—a key feature that separates it from other blue gum forms. In favourable conditions, this species typically grows 30–45 metres, forming a straight trunk and high, open crown.

Key Features

• Smooth blue‑grey to white bark that sheds in long ribbons

• Broad, glaucous juvenile leaves and long, curved adult foliage

• Large white flowers and ribbed, warty fruit

• Grows 30–45 m depending on climate and soil

• Strong vertical form with excellent ornamental presence

Landscape Uses

• Ideal for large properties, shelterbelts, and windbreaks

• Excellent for timber, shade, and habitat plantings

• Suitable for cool‑climate native landscapes

• Adds height, structure, and a classic “blue gum” character

Growing Notes

• Thrives in full sun and deep, well‑drained soils

• Prefers cooler climates and higher rainfall zones

• Fast‑growing and hardy once established

• Requires ample space due to its mature size and root system