How did an American end up as the botanical director of Chenonceau, the most-visited private chateau in France? Nicholas Tomlan, who worked at Longwood Gardens in Pennsylvania for fifteen years before moving to France, would say he planted the right seeds. At Longwood, Tomlan worked in five different areas in the garden and met the French woman who he would become his wife. After they were married in 2004, he started visiting France and French gardens, and in December of 2014, they took the plun...