So as you can see, our main recommendation is wihtout any doubt that you please keep growing Leylandii and forget about Eucalyptus as ornamentals.
Especially because in addition to the examples of non ornamental foliage displayed above, you can also check that their boring bark and too similar flower buds are not at all worth of cultivation from an aesthetic point of view! So we do not need to consider their flowers at all.
Summing up, the right thing would be sending them all back to Australia, because as you well know, eucalypts cannot make good timber either!
If you want to join us in this fundamentalist crusade for the erradication of Eucalyptus worldwide, please do not hesitate contacting us!
© 2007 Gustavo Iglesias Trabado. Please contact us if you want to use all or part of this text and photography elsewhere. We like to share, but we do not like rudeness.