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Photo: Poyt448 Peter Woodard, Public domain (via Wikimedia Commons)

Gully Gum

Eucalyptus smithii

Also known as Gully Gum, Blackbutt Peppermint, Gully Peppermint Gum

At a glance
Family
Myrtaceae
Type
Evergreen forest tree
Parts used
Leaves (fresh or dried, and the distilled essential oil)
Size
A tall forest tree, often 25 to 45 meters in the wild, though it is coppiced and kept much smaller where it is cultivated for leaf or oil
Bloom
Small clusters of creamy white flowers in late summer to autumn
Habitat
Native to the cool, moist gullies and tablelands of southeastern Australia, from New South Wales down into Victoria
Acquisition
Grow or buy
This plant in HerbSense

Key benefits

Eases chest congestion
Soothes coughs and colds
Clears stuffy sinuses
Refreshes tired muscles

Traditional uses

Long before eucalyptus oil found its way into cough drops and chest rubs on chemist shelves around the world, Aboriginal Australian communities were already steeping and burning eucalypt leaves to ease fevers, clear the head, and tend to wounds. Gully Gum in particular rose to prominence with colonial settlers and, later, the pharmaceutical trade, because its oil carries an unusually high proportion of the soothing compound cineole alongside very low amounts of the harsher, skin-irritating terpenes found in many other eucalypts. That gentle chemistry earned it the nickname of a medicinal grade oil, the standard against which other eucalyptus oils were often measured. Bunches of the narrow, silvery leaves were hung in sickrooms and steeped in basins of hot water so the vapor alone could do its quiet work.

How to grow & use it

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Pairs well with
  • Peppermint
  • Thyme
  • Elderflower
Substitutes
  • Tea tree
  • Rosemary
Choose it when

When a cold has settled into your chest and you need clean air to breathe again.

Did you know?

Gully Gum's oil is so clean and low in the harsher compounds found in other eucalypts that it became one of the benchmark oils graded as medicinal quality, the standard early pharmacists reached for over showier, more pungent eucalyptus species.

Safety

Eucalyptus essential oil is toxic if swallowed, even a teaspoon can seriously poison a small child, so never take it internally. Avoid strong preparations near the face of infants and young children, and use caution if you have epilepsy, since concentrated cineole may lower the seizure threshold.