I find solarpunk really interesting. On one hand, it's the most "fresh" aesthetic of futurism we've seen since cyberpunk. On the other hand, most of this architecture isn't environmentally sustainable at all -- the massive amounts of water and energy it takes to keep trees alive on a rooftop is antithetical to an "eco city".
The artists appear to be inspired by fad concept renderings for sky-garden towers that were never built:
Replace trees with vines and place them mostly on the south side of the buildings and it may be viable. The trick would be engineering a renewable substrate for the vines to grow on.
The artists appear to be inspired by fad concept renderings for sky-garden towers that were never built:
https://99percentinvisible.org/article/renderings-vs-reality...