Monty Don continues his extraordinary journey to see the world through 80 of its most inspiring gardens with a visit to the richest and most powerful nation in the world: the United States of America. His plan is to see how America expresses its vast wealth and incredible energy through its gardens. And at a time when the USA is grappling to define its environmental goals, Monty inevitably hopes to find a powerful movement towards sustainable gardening. Beginning in New York, where garden guerrillas are creating community gardens from derelict land, he then travels south to Virginia, to visit a garden that reflects the birth of the nation's relationship with the land. Finally, he travels west to California, to see if gardens there reflect more than the glitz of the movie industry.