If trees are wanted on such a site, they should be species that can tolerate lots of water . The adding process is motivation. Think of your car. The key connects the battery and starter. Once the engine turns over, it begins to run on gasoline.
Teachers are batteries.
People who can make more correct decisions faster have a better chance for higher quality survival. To lecture from the stage about trees and treatments is easy. When you are outside with the trees, it is not so easy. There are always some complicating constraints such as time, schedules, weather, personal health, breakdowns, regulations, complaining customers and the list goes on and on. You never know what you will face until you are out there.