[max_likelihood]

Logistically speaking, I wonder what's the best way to create a tree map/database for my own town? Google maps will go a long way towards getting location. Is the rest just driving/walking around collecting data (species etc..) manually?

[mymythisisthis]

Start entering the data in Open Street Map. https://www.openstreetmap.org/#map=18/43.68930/-79.44241

[pabs3]

The docs for entering trees on OpenStreetMap:

https://wiki.openstreetmap.org/wiki/Tree