If so, they could be a candidate for the new Octavia Hill awards - launched by the National Trust and BBC Countryfile Magazine. They are named after the Victorian social reformer and one of the founders of the Trust, who set the standard in campaigning for green places.
But who are today's green champions?
The Octavia Hill awards comprise five categories, including Growing Hero, Inspirational Hero and Green Space Guardians. You can find out more here.
The closing date for entries is 31 January and the winners will be profiled in BBC Countryfile Magazine.