A series of eight films exploring America and its botanical history.

Many surprises are waiting for David Bellamy as he takes part in the 200-millionth Appalachian spring: what is the mysterious Oriental connection? What is the strangler from the East? How could a foreign body destroy all of the American chestnuts? There are clues among the mosses, the flowering plants and even the salamanders. And as the leaves turn colour in the fall, he finds that the bounty of these woodlands once supported much more than an enormous serpent and a line of marching bears...

(Subtitles on Ceefax page 170)