Plant a tree Help to make London greener, healthier and wilder. Join London’s biggest ever tree planting weekend on 1-2 December. Make our city greener Find out how you can do simple things to make our city greener, healthier and wilder. London National Park City How the Mayor is helping to make London the world's first National Park City. Greener City Fund Mayor Sadiq Khan’s fund to create and improve green spaces and encourage more tree planting in London. Green Infrastructure Ensuring London becomes greener as it grows Biodiversity London is a diverse city, reflected not only in its population but across its landscapes and wildlife too. Trees and woodlands London is one of the greenest cities in the world. Trees and woodlands make London a healthier, more attractive place. Parks and green spaces London’s parks, landscapes, canals, reservoirs and riversides form an important network of spaces and public places. Urban Greening We need to green the grey to make the city a better place to live, work and invest. Natural capital account London's first natural capital account analyses the economic value of London's public parks and green spaces. Also in Environment Environment Strategy The Mayor's plans to make London greener, cleaner and ready for the future. London Tree Map This map shows tree data from the London boroughs and Transport for London. Greener City map A map of the tree planting and greening projects supported by the Mayor of London since May 2016. Environment newsletter Sign up now to receive updates on environmental policy, projects, events and opportunities.