I recently bought 12 cord of birch in 8' lengths, to burn next winter in my Outside wood boiler. Most of it was 8" or less diameter, I cut it all in 2' lengths but did not split most of it. I have been getting conflicting advice on splitting or not splitting birch. It's stacked up off the ground but sits outside, will the unsplit birch rot before next winter if not split? I have been told birch will rot before drying by a few people and told I would be fine as long as it sits less than a couple years by a few others. I know what I hope the answer is as I would obviously rather not unstack, split and restack 12 cord of wood