The 3-30-300 principle has become one of the most talked-about ideas in urban forestry. It’s wonderfully simple: everyone should be able to see three trees from their home, live in a neighbourhood with 30% tree canopy cover, and be within 300 metres of a good-quality green space. Simple to explain. But what happens when you apply it to a real town? Listen to our speakers explore the thinking behind 3-30-300, what the data can tell us, and what Hartlepool Council learned when they applied it across their borough.
Aired on 30 September 2026.
