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Gardening Australia, Saturday, May 12

ABC1, 6.30pm

Costa Georgiadis prefers community to competition. The only race he's in is the one to turn as many Australians as possible on to the benefits of being green. Like a human cross-bred with a hedge, he just wants to share his bond with nature.

He is good, too. Having worked in Europe and Australia as a landscape architect, he is extremely knowledgeable. And his wild enthusiasm is surprisingly endearing. In most hosts, such an over-the-top delivery would be irritating, but in Georgiadis it's genuine, which adds to its appeal.

Tonight, Georgiadis visits Adelaide but stays well away from Morphettville and AAMI Stadium. Instead, he encounters a dragon.