Resources

Eucalyptus Passion ( www.eucalyptus-passion.com ), based in south-west France, supplies a wide range of eucalyptus species that are hardy in the UK by mail-order. Their website contains species descriptions and cultural notes.
The picture gallery of the Currency Creek Arboretum website contains a great range of illustrations of eucalyptus species that are unfamiliar in the UK.
The Hardy Eucalyptus Species Index of The Hardy Eucalyptus Page contains much useful information on hardiness and cultural requirements for a wide range of species, including some tender ones, and many photos. The Page itself is a comprehensive resource.
Milligan Seeds and Trees has a good photo gallery and much other information.
The most comprehensive publication on eucalyptus in horticulture is the 'Encyclopaedia of Australian Plants suitable for cultivation' Volume 4, by W. Roger Elliott and David L. Jones (Lothian Press 1986; second revised edition 1992).
Another valuable source of information is 'Australian Plants: A guide to their cultivation in Europe' by Thomas Ross and Jeffrey Irons (published privately, 1997)