Think Acebirds comments are due to a lack of location in your profile, location does make a difference to the replies you will get to any questions you ask.
Acebird the USA style climate maps are rarely used in AUS, all of Aus falls into zones 7-13 and probably 95% in zones 8-11, zones 9-10 cover around 80% of the country and probably over 90% of the population so as far as many are concerned there is only one climate zone.