Every tree maintained by the City of Melbourne (Victoria, Australia) has "an email address" (in the mainstream press it's been "one email per tree"; in reality it's a single mailbox the CoM staffers respond to).

Click a tree marker on the map near the top of the Melbourne Urban Forest website (http://melbourneurbanforestvisual.com.au/) and you can email your selected tree to find further information, etc. A bit more info is in this Broadsheet article: http://www.broadsheet.com.au/melbourne/entertainment/article...