San Francisco was hardly a forest before the swell in its population in the mid-nineteenth century — it was mostly coastal dunes, scrub, and marshland. The city’s most extraordinary transformation was achieved by John McLaren, who magically conjured up a woodland out of Golden Gate Park’s dunes.
Today the city is home to many types of trees, some of them spectacular. One website has identified the locations of the best examples of 213 species; the list is still growing. If you want to see what a particular kind of tree looks like in the San Francisco ecosystem, all you need to do is consult this list. Click the screenshot below to visit the site.
Just for fun, I used Google Maps to zoom in on a handsome Juglens nigra (black walnut), located in the panhandle across from 1809 OakStreet (image above).