The talk below made me think of what I burn. A lot is what my real job brings back (small ornamental tree removals and prunings) and what a couple tree services dump at my place. I know many guys here who cut up a big fallen oak or such and have nice clean even sized pieces. I have mulberry, pear, crabapple, redbud, dogwood, ash and many more species. It might be crotches, limb wood, whatever. My dad always said, it all burns! Ornamentals make great firewood by the way. There will be a day when I might not love hauling wood in, cleaning up etc., but i love when my girls ask me to make a big fire because it feels soooo good on a cold night.