Monty Don concludes his journey through Britain's gardening heritage by looking at how the nation's gardens have evolved over the last hundred years. He looks at the profound effect that two world wars had on our attitude to gardens and gardening. Today gardening is one of Britain's most popular pastimes and the horticultural industry is now annually worth over nine billion pounds to the economy. Monty uncovers the stories and reveals the pioneers who led this gardening revolution. For Monty gardens are every bit as important as the houses we live in and in this concluding episode of the series he explains how this has become as important in the present day as in the seventeenth century where his journey through Britain's gardens began.