This is such a cozy game, I love it!
The art and the saplings all having names are cute, and I like that you've got this stat system implemented to make things more complicated and give more to manage.
Some things I would like to suggest:
I haven't messed around with camera constraints in Godot just yet, but it would be a nice quality of life fix to lock the camera to the size of the background, since you can just pan the camera forever
Also, being able to cancel building something after you've hit the button for it would be nice, I accidentally built a couple things that I didn't mean too cause I missed clicking the scroll bar and hit the button instead.
I think that's about it from me, but this was a lot of fun to play, thanks for sharing, and great work!