Trees are posted in the neighbourhood where they're growing. This is a map of the Vancouver neighbourhood boundaries, based on the city's map from a when we started scouting. Here is a Tsawwassen and Ladner boundaries marked on a Google map, delimited by a scout living in that area. I depend on people who know the areas surrounding Vancouver to set the boundaries and to post in the correct areas. Feel free to contribute a map (and say what you've based it on).