I haven't personally grown but almost everybody says these are perfect for Australian climates.

It is called 'Old Mother Sativa' or Mullum-Madness
Region: Australia mostly NSW
Landscape: Warmer, tropical type climate, low humidity
Breeder: Mullum-Madman
Strain: Sativa's crossed from Papua New Guinea Gold and Thailand strains. He called it Old Mother Sativa.
Success/failure?: Success for them, been growing in the town of Nimbin for centuries.
Major problem: Can't grow indoors, even under strictly controlled climate it just gets too big.
Finish date: ........
Comments: This town is the only town in Australia to celebrate weed so openly, they have awards, pubs that sell hash brownies, prohibition protest days every year etc etc

Although I haven't grown this, or at least I don't think so, chances are one of my bagseeds was this.... All the comments about it are great and they say it's the biggest plant ever. Gets to about 20 feet I think was the biggest and it yielded 15 pounds.