It is hard to get a greener job than this one or a harder job than this one. I am a tree planting contractor and need a few more people on my crew for the season about to start. There is a lot of travel, a lot of camping, and a lot of hard work. This might be a good place to start with a description:

http://web.me.com/...eeplantingblog/Do___Dont.html

There are a lot more blog entries as well that can help you get a handle on what we do. It's not a walk in the park.