Herb: Yellow Gum
Latin name: Eucalyptus johnstonii
Synonyms: Eucalyptus muelleri, Eucalyptus subcrenulata
Family: Myrtaceae (Myrtle Family)
Description of the plant:
Habitat of Yellow Gum:Usually found on badly drained sandstones from 600 - 2600 metres.
Other uses of the herb:Tolerates maritime exposure, though the foliage may be burnt, and it can be grown as a shelter belt tree. Wood is of high quality.
Propagation of Yellow Gum:Seed - surface sow February/March in a sunny position in a greenhouse. Species that come from high altitudes appreciate 6 - 8 weeks cold stratification at 2°C. Pot up the seedlings into individual pots as soon as the second set of seed leaves has developed, if left longer than this they might not move well. Plant out into their permanent positions in early summer and give them some protection from the cold in their first winter. The seed can also be sown in June, the young trees being planted in their final positions in late spring of the following year. The seed has a long viability.
Cultivation of the herb:Usually found on badly drained sandstones from 600 - 2600 metres.
Medicinal use of Yellow Gum:None known
Known hazards of Eucalyptus johnstonii:Citronellal, an essential oil found in most Eucalyptus species is reported to be mutagenic when used in isolation. In large doses, oil of eucalyptus, like so many essential oils has caused fatalities from intestinal irritation. Death is reported from ingestion of 4 - 24 ml of essential oils, but recoveries are also reported for the same amount. Symptoms include gastroenteric burning and irritation, nausea, vomiting, diarrhoea, oxygen deficiency, ,weakness, dizziness, stupor, difficult respiration, delirium, paralysis, convulsions, and death, usually due to respiratory failure.
Plant information taken from the Plants For A Future.