What tree is best for building a treehouse?

Question

Ok, so assume I have no trees. What would be the best for a treehouse? I live in the northwest, and it needs to be fast growing. Poplars are fast growing but they look to thin to support anything. Help please?

Answer 1

One that is not falling over or leaning!

Answer 2

if you build a treehouse in a fast-growing tree, the growth will move and destroy the treehouse where it is attached, unless you are very clever about how you attach it.

Answer 3

Fir

Answer 4

soft wood, hard wood. it don't matter. pick a tree. any tree. maybe not poison oak, maybe not holly, but pretty much any tree.