Originally Posted by mdvaden

Are you including "saving" and protecting trees in that, or just the care of them, as pertains to maintenance?

You might find the combined practices of the Americans (Canadians and United States) to be worth following very closely. The arborists there have tremendous resources, and the tree habitats that the arborists work in are very diverse. There are cities in mountain ranges, in desert areas, extreme winter cold, plains, exceptionally humid zones, swamp areas, and different elevations. And a lot of them network and mingle together at North American conventions. And as concentrated as all that skill is, there is still variety in the practices. Not too diverse, but some.