It can be found at the Morton Arboretum in Lisle, Illinois, USA.
https://streetartutopia.com/2024/02/15/hallow-sculpture-by-daniel-popper-in-lisle-illinois/
Check Daniel Popper out with your search engine of choice, because pretty much all of his sculptures are amazing.
I don't remember if I saw this one in person or not, but the Morton rotates through large, nature-inspired sculptures like this every few years. And you're right, a lot of them will include natural materials but they are generally metal or concrete shells over a metal frame.
Here's their current installation: https://mortonarb.org/explore/activities/exhibitions/of-the-earth/