"McCullough is on a mission to debunk thinking that American gardens are simply picket-lined lawns or copy-cats of esteemed European and Japanese cousins. After road tripping from sea to shining sea, he has carefully curated a list that undoubtedly proves the point. American garden designers are creating distinctive gardens with an All-American flair. They embrace the industrial grit of the Midwest, the hospitable grace of the South, the indigenous...