Thomas Jefferson’s Vegetable Garden: A Thing Of Beauty And Science : The Salt : NPR

Thomas Jefferson's garden was a vast, beautiful science experiment involving over 300 varieties of 90 different plants. And no gardening detail was too small for Jefferson to note in the gardening journal he kept for nearly 60 years.

http://www.npr.org/blogs/thesalt/2012/05/10/152337154/thomas-jefferson-s-garden-a-thing-of-beauty-and-science