Brooklyn's Trees is a Flickr photo pool I started to "share and celebrate Brooklyn's trees through photography." The response has been great, and the submissions are beautiful and diverse.
I've adapted a definition of "trees" from Festival of the Trees:
"Trees" are defined as any woody plant species that regularly exceed three meters in height; exceptions might include banana “trees” which are not woody plants. We are interested in trees in the concrete rather than in the abstract, so the "cloud trees" at the intersection of Ocean and Flatbush Avenues, for example, are out.Any photographs of or about trees in Brooklyn are welcomed, including those on our streets, in our parks, gardens, and other public spaces, and on private property. Young trees, dead trees, shadows or reflections of trees are all in the spirit of this group. Photos should be "safe" as defined by Flickr.