Founding Gardeners: The Revolutionary Generation, Nature, and the Shaping of the American Nation by Andrea Wulf
This extensively researched book takes you into the minds and lives of Washington, Jefferson, Adams, Madison and Franklin.
Starting with the insistence of George Washington to plant native trees at Mount Vernon in the 1700's, continuing through the Revolutionary War and on through the Presidencies of Washington, Adams, Jefferson and Madison, this book contains an overwhelming amount of information.
A 128 page bibliography testifies to the thoroughness of documentation. It is an interesting tale of how much horticulture meant to the founders of our country.