| If you run dry, try contacting arborists associations, or people through these forums, and see if you can locate the titles of textbooks that are used in college classes. Sometimes by reading the books, you can attain 50% or better of the knowledge that can be gained in the class. Maybe more. My soils class covered only the 1st third of the textbook. I was able to learn more by reading most of the rest of the book. If you try this route of inquiry - MAKE A NEW POST. This one is a bit dated, so the traffic will be minimal. Northern Wyoming? Isn't that a harsh environment to do landscaping? Isn't Yellowstone near there? | 
