LANDSCAPE architect Martin Zierholz describes his job as "detective work but thankfully without the dead bodies".
The 50-year-old spends his days restoring the gardens of historically significant sites.
There's a fair amount of sleuthing involved as Mr Zierholz searches for clues that might reveal what the space looked like years ago.
"With nature it's very different. A building stays pretty much the same but trees grow, weeds invade, things change very quickly in nature," he said.
"There's some conjuncture because plants don't live that long and things can change so quickly. I have to look at the evidence presented and if you're really lucky you might have an old photo as reference."
Mr Zierholz, originally from Germany, has had the opportunity to work on some of the majestic and sprawling gardens in his home country as well as France, Italy, the United Kingdom and Australia.
These days he works for the ACT Government beautifying places like Calthorpe's Cottage and Lanyon Homestead.
"It can be very delicate work balancing the interests of all the different stakeholders," he said.
"But it's the most rewarding thing to bring a garden back to life. When you come to a place and things have gone wrong over time or designs change and people don't know how to deal with the historical fabric.
"I find it most rewarding to analyse what's there and bring it back to how it was."
Mr Zierholz is now putting pen to paper in the hopes of writing a book that will transfer some of his knowledge. He wants to give people the information to be able to create their own little green oasis.
He would also like to write another tome detailing his experience working on various gardens including one in Badenweiler, Germany, that was more than 2000 years old.
"I want people to be inspired in their garden or in a private garden, doesn't matter the size or what plants, what matters is that you're happy in it," he said.
"I want to give people the tools to make it how they would like. So often people come to me asking for advice or have a question. The answers are easy and now I want to put them together in a book."
Prior to working on his book, Mr Zierholz dabbled in children's literature, recently self-publishing "When The Kittens Came".
The story is based in Queanbeyan where Mr Zierholz has lived for the past seven years with his partner Barbara Corsini.
It details the discovery and adoption of the family cat Kitty and her five kittens named Smoky, Tiger, Marmalade, Spooky and Sooty.
"It wasn't really planned to be a book, I just started writing it down as it happen and I'm grateful it did," he said.
"I really love literature and would to love to make a living from my writing."