i had just purchased a cord of wood 2 weeks ago, and it was seasoned for a year, and yes split under cover. Therre was a mix of hardwoods, apple, maple, white oak, and chery, and probally a few others, and it burns well, the oak was not ready in my own opinion, but not horrible, a lil sizzle, especially if they were larger splits. I had just cut down an oak last week at my moms place, and it has been on the trailer until yeasterday afternoon. Thte tree was a dead stander, with 3 main tunks out of one. The one had broken off a few years back, it was around 20 inches in diameter, and there was bout 10 feet left standing. I dropped that lod first and it was hallow, nothing worth while. I then dropped the 2 other trees attached to the system, the one was a nice 70 footer again dead stander not as bad, no center rot, but shrooms on the bark. and the last was the biggest around 80 feet in whole and the largest trunk around 22 inches, cut from both sides to drop.. I had cut up the 70 footer and loaded it, and I cut the top portion of the larger one. I went out yesterday afternoon, and strarted splitting some fo the wood, some of which was grey with no bark. I looked at it after i split it,a nd I thought I would give it a try in the stove. The wood burned so well, great BTU's and long burn. I actually went to harbor yesterday to buy a meter and they were sold out. I can assure you from that expereince that a dead stander is a good burner, right off the bat. I have some other stuff that was dead rot, from the ground, and was split a few weeks back and stacked. The pile looks real good as of yesterday, and I assume will dry very quickly from the way it looks, maybe even for the end of thsi burn season... I beleive that the type of wood and the moisture it is subject too, determeins the rot cycle and usability of the wood.. just my 3 cents...if it is "junk" and can be burned why not burn it, it is "free"...maybe not this year but it will be cold next December too...