Maybe. It's a little rickety at the moment. I've found two nails in roots but nothing changed. Maybe the buff gets bigger? Not really sure.
It would be nice if it was all one dungeon but say every 10 floors, or just simply a random chance per floor in any dungeon. Meaning you just need to do any dungeon and any progress works you to the goal of making the tree grow? I've gotten the sewer one and the slime dungeon one. Eventually I'll get the rest lol