I go for hackberry over ash--great firewood--seasons quickly--splits easily except for crotch wood ---only drawback is that it does go punky sooner than most if left out---keep it off the ground for sure
I once saw a house built entirely out of stacked 2x4 and 4x4 lumber. Solid 3.5" inch thick wood walls throughout.
Anyone have any information on building walls by stacking these 4x4's