http://www.dubbo.nsw.gov.au/Recreationa ... arden.html
The gardner that looks after the place, a very Aussie council gardener, is a very enthusiastic chap and is happy to hear compliments about the garden. A while ago he told me that the expert gardeners from Japan that helped design the garden did the initial training of the Pines and such and would be comming back in a year or so.
I called the Dubbo council today and was told that the japanese gardeners were due to come back in June or July this year. It was explained to me that the Japanese gardeners were there to train the council gardeners only but anyone was welcome to come along and watch. It may be hard to ask questions unless you take an interpreter with you

I will update as I get more detailed info for anyone thats intrested.