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Myrtaceae FAMILY

Eucalyptus jensenii

Eucalyptus jensenii

Edibility
0/5
Medicinal
0/5

Safety & Hazards

None known

Cultivation Details

HabitEvergreen Tree
GrowthMedium

Eucalyptus jensenii is a plant of the semi-arid to moist tropical zone of northern Australia, where it is found at elevations up to 600 metres. It grows best in areas where annual daytime temperatures are within the range 22 - 34°c, but can tolerate 13 - 43°c. It does not experience frosts. It prefers a mean annual rainfall in the range 550 - 1,300mm, but tolerates 400 - 1,550mm. Rainfall is markedly seasonal with a dry season of several months[1, 2].. Requires a sunny position, succeeding in a range of light to medium-textured, well-drained soils of low fertility[1]. Tolerant of dry soils[3]. Found in the wild on sandy or gravelly soils on gentle to moderate slopes[4]. Prefers a pH in the range 5.5 - 6.5, tolerating 4.5 - 7[1]. The plant develops a lignotuber - this is a woody tuber that starts to develop near the base of seedlings and can become massive in the mature plants of some species. It possesses embedded vegetative buds, allowing the plant to regenerate following crown destruction, for example by fire[4]. The tree is moderately fast-growing[3]. Trees respond well to coppicing[[3]. Trees can commence flowering within 3 years from germination of the seeds[3]. This species is one of the ironbark group of Eucalypts. The resin exudes into the bark then hardens making the bark very haed and difficult to cut through with primitive tools[3].

Propagation

Seed - surface sow in a sunny position and make sure the compost is not allowed to dry out[5, 6, 7]. Species that come from high altitudes appreciate 6 - 8 weeks cold stratification at 2°c[8]. 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[8]. Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2026-02-20. <tropical.theferns.info/viewtropical.php?id=Eucalyptus+jensenii>

Pollinators

Bees, Insects

References

  1. [1]Ecocrop — http://ecocrop.fao.org/ecocrop/srv/en/home ↩︎Basic information on a wide range of useful plants, plus details of environmental needs where available.
  2. [2]Eucalypts for Planting — Jacobs M.R. · FAO; Rome · 1981 · http://www.fao.org · ISBN 92-5-100570-2 ↩︎An excellent publication, rather dated now but with a wealth of information about the Eucalypts. It can be downloaded from the Internet as a PDF file.
  3. [3]Australian Trees and Shrubs: Species for Land Rehabilitation and Farm Planting in the Tropics — Doran J.C.; Turnbull J.W. (Editors) · Australian Centre for International Agricultural Research; Canbe · 1997 · ISBN 1-86320-127-0 ↩︎A very informative book, rich in information about the uses, cultivation needs and very much more for over 160 species of Australian trees and shrubs.
  4. [4]EUCLID - Eucalypts of Australia — Centre for Australian National Biodiversity Research, Canber · http://keyserver.lucidcentral.org:8080/euclid/data/02050e02-0108-490e-8900-0e0601070d00/media/Html/index.htm ↩︎A website dedicated to the genus Eucalyptus (sensu latu), with descriptions and nomencultural information on all the species.
  5. [5]Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. — Bean. W. · Murray · 1981 · ISBN - ↩︎A classic with a wealth of information on the plants, but poor on pictures.
  6. [6]Propagation of Trees, Shrubs and Conifers. — Sheat. W. G. · MacMillan and Co · 1948 · ISBN - ↩︎A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
  7. [7]Growing from Seed. Volume 2. — Rice. G. (Editor) · Thompson and Morgan. · 1988 · ISBN - ↩︎Very readable magazine with lots of information on propagation. An interesting article on Ensete ventricosum.
  8. [8]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · 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.
  9. [9]Eucalyptus Leaf Oils: Use, Chemistry, Distillation and Marketing — Southwell I.A. · 1992 · https://doi.org/10.1016/0031-9422(92)80403-2 ↩︎An extensive list of Eucalyptus species and their essential oil content.