Felling, transplanting or replacing: what to do with the oldest trees in big cities?. The battle for the management of tree heritage in Madrid has revealed the technical complexities of a major debate among gardening and landscaping experts.

“A mature shade plane tree, close to 60 years old, subjected to moderate pruning throughout its life, has already produced all the wood it can generate to fix carbon,” says one expert. Cedar, for its part, is one of the most recommended species for capturing atmospheric pollutants.