Flooded Gum, Eucalyptus grandis W. Hill ex Maiden (1919), previously known as E. saligna var. pallidivalvis R. Baker & H. G. Smith (1902) . Later name is invalid.
Sydney Blue Gum , Eucalyptus saligna Sm. (1797), also known as E. salicifolia Cav. (1797). Later name is invalid. This and the previous species are often confused.
Pictured trees were planted as part of Eucalyptus species trials carried on the 1950's in a very mild humid coastal Atlantic climate in Northwestern Spain experiencing few and very mild frosts, roughly equivalent to USDA Zone 9a. Both species have been regarded as "suitable for milder conditions than E. globulus" (Tasmanian Blue Gum) after cultivation both in Spain and Portugal. The climate for E. grandis in its native Australian habitat is of high rainfall (1000 to 1800 mm per year), warm and wet summers (average maximum temperature of the warmest more >30ºC ) and mild winters (average minimum temperature of the coldest month 6ºC). Exceptional minimum temperatures have been recorded of -5ºC in certain areas, but not beyond this. The climate for E. saligna in its native Australian habitat is also of high rainfall (1000 to 1500 mm per year) with rainy summers or even distribution along the year. Summers are warm with maximum absolutes of 31ºC and winters are very mild and generally frost free.