"Ginkgos adapt well to the urban environment, tolerating pollution and confined soil spaces.
They rarely have disease problems, even in urban conditions, and are attacked by few insects." -- Wikipedia
Finished reading O'Neill's book last night. It's his account of the role he played in exposing and arresting Robert Hanssen, the American Federal Bureau of Investigation (FBI) agent who spied for Soviet and Russian intelligence services against the United States from 1979 to 2001.