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Mary Forsdyke Garden and Warren Lake

May to September 8am-7pm October to April 8am-4pm

0.7ha formal garden with adjoining lake in Bushey Heath. 1 route and 5 points of interest

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Mary Forsdyke

Site of historical interest

Mary Eliza Forsdyke 1852-1956.  A former resident of Bushey and Headmistress of Merry Hill Girl's School she lived to the age of 104, the oldest resident of Bushey. In her later life she also generously gave her time to charity work at St Peters Church.  Although this garden was dedicated to her memory in 1953, she sadly never got the chance to see it.

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Warren Lake

Water Habitat

This man-made lake was created as an ornamental feature in the grounds of 'The Warren', a Victorian house which stood on this site from the nineteenth century until it was demolished to make way for new houses in the 1950s. The property developers, Comben and Wakeling, gave The Warren Lake as a gift to the Council in 1961 on condition that it was kept as a public open space for everyone to enjoy.

Th eland on which The Warren Estate was built was once common land used by local people. In 1809 Bushey Heath was enclosed under an Act of Parliament.  In principal it meant that Lords and commoners would each receive a share of the land but in reality the land on which you are now standing became the property of Mr Capper, the Lord Mayor of Bushey.

In 2017, the lake was drained down and silt removed.  The banks were reformed using this silt and planted up with a mixture of planting to increase habitat for wildlife and add colour.  Water lilies were also introduced and aerators installed to provide additional oxygen to help maintain a healthy aquatic habitat.  The 1898 OS map of the Warren Estate showed the lake marked as a fish pond - maybe one day soon we will be able to re-introduce fish!

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Park Information

Situated in Bushey Heath opposite St Peters Church, this enchanting garden had extensive improvements carried out in the Spring of 2017.  Improvements to Mary Forsdyke Garden and Warren Lake included upgrading the footpaths, planting beech hedging around the perimeter of the garden, new feature trees, adding additional plants and improving the habitat of Warren Lake by removing silt, planting around the perimeters and installing a boardwalk.

Complete the memorial Michael O'Brien Lakeside Walk and don't forget to look up...there is plenty to see all around. 

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On Site Facilities

  • Car Park (Pay & Display)Car Park (Pay & Display) icon
  • Disabled AccessDisabled Access icon
  • Dogs WelcomeDogs Welcome icon
  • Pushchair Friendly PathsPushchair Friendly Paths icon

Park Routes

Michael O'Brien Lakeside Walk

Distance 0.2 km
Steps taken 325

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How to get here


The Bushey High Road pay and display car is situated next to the garden entrance Bushey Car Parks charges

Directions here

Public Transport Information:

Buses stop along Bushey High Road. 

Further information on public transport is available here: or


The garden is easily accessed by main roads although no cycling is permitted in the garden.

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