The type of eucalypts I like to use are Tuarts (don't know botanical name), Bushy Yate (Eucalyptus lehmannii) , Red Morrell (Eucalyptus longicornis) and Pear-fruited Mallee (Eucalyptus pyriformis). these are all local trees. I do occassionally use Blue Mallee (Eucalyptus macrocarpa) as well as it is abundant around here.