Sydney Royal Botanic Gardens chief Tim Entwisle said the country needed to unhook itself from the arbitrary four-season model it has inherited from Europe.
He told Australia's ABC News: "Having four three-month seasons... doesn't make any sense in the place we live. Something with more seasons would work better and something that unhooks us from these arbitrary European seasons."
He said a localised system where different regions had a different number of seasons would be a good model, adding: "I'd be encouraging different areas to have local regional seasons, to spend some time working that out and to use them to reflect what's going on around us."
He called on the country to have a national debate, suggesting a competition to name the new seasons.
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