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Eucalyptus coccifera - Hook.f.

Mt. Wellington Peppermint

Author	Hook.f.	Botanical references
Family	Myrtaceae	Genus	Eucalyptus
Synonyms
Known Hazards	Citronellal, an essential oil found in most Eucalyptus species is reported to be mutagenic when used in isolation[269]. In large doses, oil of eucalyptus, like so many essential oils has caused fatalities from intestinal irritation[269]. Death is reported from ingestion of 4 - 24 ml of essential oils, but recoveries are also reported for the same amount[269]. 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[269].
Range	Australia - Tasmania.
Habitat	Mountains to 1200 metres[77].
Edibility Rating	0 (1-5)	Medicinal Rating	0 (1-5)

Physical Characteristics

An evergreen Tree growing to 15m by 6m at a fast rate.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils, requires well-drained soil and can grow in nutritionally poor soil. The plant prefers acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It requires dry moist or wet soil and can tolerate drought. The plant can tolerate maritime exposure.

Habitats

Woodland Garden; Canopy; Secondary; Bog Garden;

Edible Uses

None known

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

None known

Other Uses

Dye; Fuel.

Olive-green and gold dyes are obtained from the leaves[168]. An excellent fuel, it is similar in quality to ash, Fraxinus excelsior[107].

Scented Plants

Leaves: Crushed

The leaves are extremely aromatic.

Cultivation details

Prefers a sunny position in a moderately fertile well-drained moisture retentive circum-neutral soil[200]. Tolerates poor soils, especially those low in mineral elements[200]. Tolerates dry soils and also drought once it is established. A very wind hardy tree[1, 49, 75], tolerating salt-laden winds[200]. Plants are very frost resistant[49, 77], tolerating long periods down to -10°c and short periods down to -16°c[200]. Eucalyptus species have not adopted a deciduous habit and continue to grow until it is too cold for them to do so. This makes them more susceptible to damage from sudden cold snaps. If temperature fluctuations are more gradual, as in a woodland for example, the plants have the opportunity to stop growing and become dormant, thus making them more cold resistant[200]. A deep mulch around the roots to prevent the soil from freezing also helps the trees to survive cold conditions. The members of this genus are remarkably adaptable however, there can be a dramatic increase in the hardiness of subsequent generations from the seed of survivors growing in temperate zones[200]. A very ornamental tree, it grows very well in Britain as far north as the west of Scotland[11]. The leaves are extremely aromatic[245]. Plants are shallow-rooting and, especially in windy areas, should be planted out into their permanent positions when small to ensure that they do not suffer from wind-rock[245]. They strongly resent root disturbance and should be container grown before planting out into their permanent position[11]. Plants are subject to 'silver leaf' disease[107]. Eucalyptus monocultures are an environmental disaster, they are voracious, allelopathic and encourage the worst possible attitudes to land use and conservation[200]. The flowers are rich in nectar and are a good bee crop[200].

Propagation

Seed - surface sow February/March in a sunny position in a greenhouse[11, 78, 134]. Species that come from high altitudes appreciate 6 - 8 weeks cold stratification at 2°c[200]. 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[200].

Links

This plant is also mentioned in the following PFAF articles: Trees and Shrubs for Shelterbelts: E-M.

References

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[11] Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981
A classic with a wealth of information on the plants, but poor on pictures.

[49] Arnold-Forster. Shrubs for the Milder Counties. 0
Trees and shrubs that grow well in Cornwall and other mild areas of Britain. Fairly good, a standard reference book.

[75] Rosewarne experimental horticultural station. Shelter Trees and Hedges. Ministry of Agriculture, Fisheries and Food 1984
A small booklet packed with information on trees and shrubs for hedging and shelterbelts in exposed maritime areas.

[77] Kelly. S. Eucalypts. (2 volumes.) Nelson, Melbourne 1969
A very readable book (in two volumes) on the many species of Eucalyptus trees in Australia.

[78] Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.

[107] Brooker. M. I. A Key to Eucalypts in Britain and Ireland. HMSO 1983 ISBN 0-11-710192-3
A Forestry commission booklet giving details of the more common Eucalyptus species grown in Britain. Good identification guide.

[134] Rice. G. (Editor) Growing from Seed. Volume 2. Thompson and Morgan. 1988
Very readable magazine with lots of information on propagation. An interesting article on Ensete ventricosum.

[168] Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974 ISBN 0-02-544950-8
A very good and readable book on dyeing.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[245] Genders. R. Scented Flora of the World. Robert Hale. London. 1994 ISBN 0-7090-5440-8
An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.

[269] Duke. J. Handbook of Energy Crops - 1983
Published only on the Internet, excellent information on a wide range of plants.

Readers Comments

Plants for a Future does not verify the accuracy of reader comments, use at your own risk. In particular Plants For A Future can not take any responsibility for any adverse effects from the use of plants. You should always consult a professional before using plants medicinally.

Eucalyptus coccifera

John Worsley Mon Dec 4 2006

I have just had a large eucalptus tree fall down in my garden. Luckily it die very little damage. Before taking a chain saw to this magnificent tree (probably 60/70 ft tall) I wondered if it had any value as furniture wood, or any other use?

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