Monty explores the extraordinary scenery of the west coast of America. In Arizona, Monty learns about cacti and marvels at the sight of them in the desert and in private gardens.

Monty Don goes south to explore gardens of early independent America and learns how the history of this part of the country is still very much evident in the places and people he meets.

Monty Don travels across America to explore whether there is such thing as an American garden. Monty begins his journey in a prairie, the original American flowering wilderness.