The Charterhouse gardens comprise Charterhouse Square and six courtyard gardens within our walls. Charterhouse Square is a rare green space open to everyone to enjoy on the border of Islington and the City of London. It was redesigned and opened to the public thanks to a grant from the Heritage Lottery Fund in 2017.

Within our walls the gardens are maintained for the benefit of our residents and are open to the public to visit in the summer for Garden tours and Open Garden Evenings. They are important in supporting the health and wellbeing of the residents; through participating in gardening where interested, relaxation, enjoyment of nature and green spaces and inspiration for arts and creativity.

We are also a Grade 2 SINC (Site of Importance for Nature Conservation) and provide an important habitat for wildlife in a highly urban environment.  The gardens contain herbaceous borders, lawns and several veteran Mulberry trees. They are managed as formal gardens and there are also some ‘re-wilded’ spaces of native hedges, wildflower meadows and a small pond.

The garden team are committed to increasing biodiversity at the Charterhouse and gardening in a sustainable way, and work with Pollinating London Together  to monitor and improve the habitat for pollinators. Their 2024 Greenspace Habitat Surveys for the gardens and Charterhouse Square tell us that while we are scoring highly for our courtyard gardens, there is room for improvement in Charterhouse Square. We will be working to find ways to improve the habitat and biodiversity of the square, including using this plants for pollinators matrix, over the next few years as part of the five year plan for the gardens.