I would make it out of morphs.
But because it has to be oblique you cant pull the morph.
First draw the shape of the tree and rotate it vertically.
So I would make a frame of morphs and make the treads out of morphs or slabs.
Made a
video of it.
I gave the shape of the tree no thickness.
Architectural construction designer, draftsman, modeller
ArchiCAD 25.