Eucalyptus crebra citrata F.Muell.
Common Name: Lemon-scented Ironbark
Eucalyptus staigeriana is an evergreen tree that can grow up to 22 metres tall. The short bole is frequently of poor form[
The tree has been planted experimentally in several countries for the production of essential oil, but no commercial enterprise has been reported[
Australia - northern Queensland
Eucalyptus staigeriana is native to the monsoonal tropical climate of northern Australia, where it is found at elevations up to 600 metres. The mean annual rainfall is within the range 1,000 - 1,500mm and there is a dry season of around 7 months that can be severe. The mean maximum temperature of the hottest month is 32°c; mean minimum temperature of the coldest month is 13 - 15°c, and frosts are very rare or non-existent[
The leaves have the odour of citronellal[
An essential oil is obtained from the leaves. It is rich in citronellal[
]. The leaves have a much higher leaf oil content than the commonly cultivated Eucalyptus citriodora (4% fresh weight). The main constituents are geraniole (9 - 18%), limonene (1 - 14%), beta-phellandrene (12 - 34%) and nerale (8 - 12%). It is used in perfumery, toilet preparations and as a flavouring[
The red wood is strong and durable[
Seed - surface sow in a sunny position and make sure the compost is not allowed to dry out[
]. Species that come from high altitudes appreciate 6 - 8 weeks cold stratification at 2°c[
]. The germination rate is only about 20 - 25%[
]. 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. The seedlings are ready for planting in the field when they are 25 - 30 cm tall, usually after 3 - 4 months.
The seed has a long viability[
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