Secret Garden is a 2026 British nature documentary series produced by Plimsoll Productions for the BBC and The Open University, and narrated by Sir David Attenborough. The five-part series explores the hidden biodiversity and wildlife of backyards around Great Britain, featuring gardens in Oxfordshire, Bristol, the Lake District, the Wye Valley and the Western Scottish Highlands.
The series premiered in 2026 in the United Kingdom on BBC One and BBC iPlayer on 5 April, with the last part shown on 3 May, five days before Attenborough's 100th birthday.
Reception
The series received broad acclaim from critics. Writing in The Guardian, Jack Seale gave the series 5 out of 5 stars, dubbing it a 'gorgeous fantasy' and praising it for capturing the 'thrilling stories' of the animal world despite remaining so close to home. Seale did, however, note that 'much of the series is ensconced in the top 1% of British home patches', thus not realistically reflecting the average British garden. Writing in The Times, Carol Midgley gave the series 4 out of 5 stars, describing it as 'magical' and praising its 'clever perspective' in storytelling.