The plants we grow in our gardens are some of the richest and most varied in the world. But very few of them are native to this country. So where do they come from? Who brought them? How have we changed them? Tulips
This week Geoffrey Smith takes a look at one of the brightest of our spring bulbs which at one time almost caused the downfall of a nation.
Film editor PETER ringsteo Director ERICA Griffiths Producer BRIAN DaVIES