He will spend a year filming in the garden, which has developed over five centuries, using techniques more usually seen in a David Attenborough nature documentary.
Using natural history film-making methods including aerial photography, time-lapse, thermal imaging, and remotely-operated motion-sensitive cameras positioned around the garden, Titchmarsh and his film crew will look at every angle of the garden to give viewers a rare and intimate insight into the 16 hectare urban oasis.
This approach will allow the series to show the transformation of the seasons, showcase the work of the gardeners and highlight the garden’s flora and fauna.
The garden’s history, from its origins as part of a much bigger hunting ground for Henry VIII to its function as a playspace for the Queen and Princess Margaret during their childhood, to current day use including as the venue for the 8,000-guest Royal Garden Party, will also be examined, with the help of archive footage.
Commissioning editor, director of commissioning factual Richard Klein said: "There is something magical about a garden hidden behind high walls, and no more so than here, at Buckingham Palace. Guided by Alan Titchmarsh and the four seasons, the Queen's Garden is a delightful and charming exploration of that magical world, with a light dusting of royal history."
The series will be made by Oxford Scientific Films, which made the Secret Life of Dogs, Secret Life of Babies and Secret Life of Cats series.