I've been gathering red elm. I only go for the kind that has been air dried and barkless for the last 10 years. If I learned one thing this year, it's it is not the kind of wood you have, but the kind of wood you have and the condition it is in when you burn it. I stumbled on the most beautiful speciman yesterday. It was 30" at the base and had 3 main branches that were about 16". This stuff probably was dead standing and air drying for at least 5 years and fell and laid off the ground another 5 years. A year ago I would have passed this stuff over, but now I seek it out. I have four large stacks of this stuff now, but I believe my luck will soon run out finding it.