yes, but lumber is made of spruce and or pine or maybe for. those are the niggers of firewood. the only thing those light wood species are good for is making kindling. the only thing those light wood species are good for is making kindling. soft wood is a useless waste of time and space in an actual cold climate. old rotten wood loses energy so that pile of garbage you posted should be on your compost heap not inside your woodstove
Canada