Originally Posted by Vendot

I wonder why you chose New Zealand for the tree?

My theory:

(1) Relatively remote from the geo political danger zone of the rest of the world.
(2) A healthy and self sufficient ecosystem.
(3) Fantastic weather, in case you want to visit your tree and provide human produced fertilizer ;)
(4) No major enemies around the world.
(5) Elevation of the land, now where concerns that:

Christchurch is very close to sea level so if you anticipate a rise in sea levels in future decades, don't chose this place. Opt instead for Auckland and choose higher land within Auckland.

Wish I could help but I'm not too close to the tree business.