We don't heat all that much with wood, but I've got most of a cord of well-seasoned hardwood, and over a cord of partly-seasoned (between 8 and 12 months) hardwood on hand. I've got two young oaks on the ground that I'm in the process of sawing, splitting and stacking.

I also took down a (very thorny) locust tree. I've never burned locust. The farmers where I grew up used it extensively for fenceposts because it was slow to rot. It seems hard and dense. Anyone got any experience with burning it?