I was perusing the interweb for cottonwood uses and found something pretty humorous...
Some guy said "Cottonwood is the 'Rodney Dangerfield' of wood."
:laughing:
I know it burns like paper, so I don't use of for firewood. Its not worth the effort to cut, stack and split it only to see it go POOF! in a couple hours in our wood burner, so whenever someone asks me if I'd like to remove one from their property, I respectfully decline. I usually just tell them the tree is too big for me to handle (which it usually is around here, anyway).
As for making lumber out of it, I have no experience with making lumber... from what I've read, though, cottonwood is not dense, has high shrinkage, low strength, low rot resistance and low heat value. The only wood with less heat value is Willow.
Wood - Combustion Heat Values
With that said, there's a bunch of people out there that say it make a beautiful wood when dried properly. I just don't know if I'd want softwood furniture. I'd think it would get dents easily and break easily.