Gardening Leave?

Climate change results in extreme weather events, like heatwaves, occurring more frequently, more intensely and for longer. Studies have recently shown that Botanical Gardens are the most effective 'green spaces', when it comes to cooling nearby streets. Their presence can reduce temperatures there, by as much as 5 degrees Centigrade (https://www.theguardian.com/environment/2024/feb/23/botanical-gardens-most-effective-green-space-at-cooling-streets-in-heatwaves). Heatwaves increase deaths (especially in the very young and the aged) even in 'temperate' countries like the UK. There are two ways of dealing with climate change. One is mitigation, where attempts are made to reduce the rate of global heating, by, for example, limiting 'greenhouse gas' emissions. The other is adaptation, where changes are made to, hopefully, enable humans to cope with climate change. Creating more Botanical Gardens, would clearly fall in the latter category. That creation, however, requires substantial space and would not be a fast process. One would also have to ensure it didn't create inadvertent problems e.g. damage by root systems to existing buildings; excessive consumption of water; providing breeding locations for mosquito vectors of disease etc. Access to new Botanical Gardens could, of course, improve the well-being and mental health of folk living nearby. Perhaps, creating bigger 'green spaces' in cities, with more mature trees as well as increased biodiversity, would be a quicker and more easily 'rolled-out' alternative?