Frogmore Meadows is a 4.6-hectare (11-acre) biological Site of Special Scientific Interest in Hertfordshire and Buckinghamshire, north of the village of Chenies.

It consists of two meadows in the Chilterns Area of Outstanding Natural Beauty, next to the River Chess, one of which is a Hertfordshire and Middlesex Wildlife Trust nature reserve.

Plants in drier areas include betony, and mature hedgerows have a wide variety of invertebrates.

There are butterflies such as skippers, meadow browns, ringlets and marbled whites.

[1][3] The site is open at all times and a footpath between Sarratt and Chenies affords access.