DENVER -- The "Tree Fairy" camouflages himself in foliage and said he is guided by the light of the moon.

"My mother wants me to quit. My sister seems to want me to quit. They think I am a little crazy and are worried I might go to jail," said the Tree Fairy.

The Tree Fairy wants to remain anonymous on his unique mission of goodwill. An elfish angel of sorts, the Tree Fairy finds joy in planting trees in the yards of unsuspecting neighbors.

"I like nature. I wanted to live around nature. I really wanted to live in a forest so I was either going to live in a forest or I was going to bring the forest to me," said the Tree Fairy.

The Tree Fairy said he has been planting trees in neighbors' yards for the past two years. It's a compulsion which started rather simply, he said.

"I found a bunch of trees on sale that I absolutely could not resist. There were some pine trees, oak trees, maple trees, cherry blossom trees and aspen trees," said the Tree Fairy.

He said one night he just decided to plant them.

The Tree Fairy took 7NEWS along for the ride and showed us how he does it.

It was a lot of work but took him about 30 minutes. He is careful to bring a tarp to dispose of the soil he digs up. He then plants the tree and fills the hole back up, watering it before he goes.

The Tree Fairy then leaves a note telling his neighbors where the trees came from and asks them to take care of it.

He said, so far, he has planted 41 trees and 28 remain.

"Unfortunately, not everyone wants a tree," said the Tree Fairy.

He said it doesn't discourage him because he draws joy when he sees his neighbors watering their trees and even decorating them for Christmas.

The Tree Fairy is violating the law by destroying his neighbors' property, but police told 7NEWS they haven't received any complaints.

The Tree Fairy has set up a Twitter page for people to follow him: www.twitter.com/thetreefairy.