Various sources in North America maintain that A. cunninghamia (Hoop tree, I believe) is a bit hardier than many of the other Araucarias, but I thought I'd ask the experts.

Using the USDA zone system, how cold do you think it can go? To zone 8? To zone 7?

What do you think about A. bidwillii (bunya-bunya), also said to be hardier?

PS: I'm planning a trip through Syndey this October. What would you recommend to someone especially interested in Araucaria and Agathis? A trip the the Botanical Garden for sure, I would imagine. What else?

Thank you for your consideration,

Arauquoia