Urban trees across south-east England, including London, are showing visible signs of stress from hotter and drier summers. The source reports that botanists warn these trees can no longer cope with the region's changing climate, which is becoming increasingly inhospitable for many common planted species.
Because the source is a single report, there is no contrasting viewpoint to note. The recommendation is straightforward: begin replacing vulnerable trees with species better adapted to drought. The article does not specify which species or a timeline, only that the shift is needed to keep urban trees alive and healthy.
If cities delay this transition, the source implies, the urban canopy will continue to degrade. The focus is on proactive replacement rather than waiting for trees to die off, though the practical steps for doing so are not detailed in the report.