Tea Tree

Melaleuca linariifolia

Physical Characteristics

Melaleuca linariifolia is an evergreen Shrub growing to 6 m (19ft) by 4 m (13ft). See above for USDA hardiness. It is hardy to UK zone 9. It is in leaf all year, in flower in June. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid and neutral soils. It cannot grow in the shade. It prefers moist soil.

Distribution

Australia - New South Wales, Queensland.

Habitats

Woodland Garden Sunny Edge; Hedge;

Edible Uses

None known

Medicinal Uses

Antibacterial Tea tree, and in particular its essential oil, is one of the most important natural antiseptics and it merits a place in every medicine chest[254]. It is useful for treating stings, burns, wounds and skin infections of all kinds[254]. An essential oil obtained from the leaves and twigs is strongly antiseptic, diaphoretic and expectorant[156, 157, 238]. It stimulates the immune system and is effective against a broad range of bacterial and fungal infections[238]. Internally, it is used in the treatment of chronic and some acute infections, notably cystitis, glandular fever and chronic fatigue syndrome[254]. It is used externally in the treatment of thrush, vaginal infections, acne, athlete's foot, verrucae, warts, insect bites, cold sores and nits[238]. It is applied neat to verrucae, warts and nits, but is diluted with a carrier oil such as almond for other uses[238]. The oil is non-irritant[238]. Another report says that high quality oils contain about 40% terpinen-4-ol, which is well tolerated by the skin and 5% cineol which is irritant. However, in poor quality oils the levels of cineol can exceed 10% and in some cases up to 65%[254]. The essential oil is used in aromatherapy. Its keyword is 'Antiseptic'[210].

Known Hazards

Do not take internally. Possible central nervous system depression along with ataxia and drowsiness. Possible stomatitis, vomiting, diarrhoea and gastrointestinal irritation when taken orally [301].