Kenyon left United after three years as chief executive at Old Trafford and had to go on gardening leave before taking up his role at Stamford Bridge at the start of 2004.
And now, four years after Reynolds planted the first illegal seed, a grassroots guerrilla gardening movement has sprouted up around him, with thousands of revolutionaries throughout the world who are armed and ready with rakes and shovels to turn areas of urban decay into springy patches of peonies and sunflowers.