Bronze Wood
Useless for building because its bark is made of bronze.
Maybe it's no good for building, but bronze is excellent for conduction in machines. It's incredible that such a useful resource grows on trees here.
You've been going crazy for all this mechanical stuff. You lookin' to move here, mate?
Of course not! The Bionis is my home. It would be nice if we could plant some of this back in Colony 9, though.