About the reserve

This valley mire, located just north of Iron Age fort remains, developed on a gravelly slope where seepage of acidic, nutrient-poor spring water creates gullies and pools on the underlying clay. If you don’t know it’s there it can be easily overlooked when walking through Wimbledon Common, but once found provides a small oasis of calm away from the bustle of dog walkers, runners and cyclists. 
Farm Bog is mostly wet throughout the year, even in times of drought.

History of Farm Bog 

This constantly wet habitat supports a specialised plant community which thrives in a rich peat layer that is more than two metres deep and was formed over a period of at least 6,000 years. An agreement has been in place since the 1980s between the Conservators and London Wildlife Trust whereby volunteers from the Trust undertake habitat management of the site. Since then this work has mainly consisted of controlling reed and scrub invasion, without which the bog would quickly turn into wet woodland.

Management of Farm Bog

The reserve is owned by the Conservators of Wimbledon and Putney Commons Conservators, and is managed by volunteers from London Wildlife Trust through an agreement with the Conservators.

Status of Farm Bog

Site of Special Scientific Interest (SSSI); Special Areas of Conservation (SAC); Site of Metropolitan Importance.

Get involved at Farm Bog

Volunteering opportunities

Visit our volunteering page to find out how to get involved

Record your sightings

Record species you've spotted at Farm Bog