Kevin, We are cutting several species of oak, some in the red family and some white. We are using star and square drive screws because nailing doesn't go well. White is for the siding and red is stringers and other internal structure (more or less) and were not sure what to do with the hickory. I'm trying to get a lot of wood stickered in advance to partially cure but my friend is building while the oak is practically dripping wet. Several folks back in Kentucky and around there use green milled oak and get good results.
I'm going to use board and batten so the battens may have to be a bit wider to cover the shrinkage. I also will fasten the siding only on the midline so shrinkage will not pull it apart like if it were edge fastened. If the siding is a disaster I can cover the bld with painted steel. My friend is going to wait and see whether or not he really needs battens (I think he will.)
We have lots of post oak in smaller sizes, not large enough to cut many boards from but large enough to square up and use for a timber. Supposedly the post oak lasts well with earth contact so I may treat some with Behr post preservative and use it as poles where it is long enough.
We have been told that the red wood of the eastern red cedar lasts well in the dirt but that the white part rots off fairly quickly. We were advised that if there is at least a 6 in diameter red part that the white could rot off and the pole would still be OK. I'm still inclined toward some preservative.
Pat