Amazingly, this isn’t some far out idea - people build from living trees today, and have for centuries! There is a region near the Himalayas in India called Meghalaya where living fig trees and rubber trees of truly colossal size are woven into living bridges up to 100 ft long(!!!) to cross the mountainous terrain. They weave the roots together, forming flexible suspension bridges.
It’s brilliant because you don’t have to worry about maintaining your bridges or remaking them each Monsoon season when get washed out. Truly astonishing however is that one of these structures is double-decker - the lower part is underwater during Monsoon!
Meghalaya contains both the wettest and second latest wettest places of human habitation on the planet, with average annual rainfall totals between 12 and 13 meters of rain - for my metrically challenge American compatriots that’s up to 39 feet of rain. On average.
Record is 26 m in 1985 - that’s 1000 inches yo. That’s beyond nuts.