Being a woodworker and forester, your next best bet, for a decay and rot resistant specie would be teak. The wood has a density factor of 53 versus 47 for white oak. You could do an internet search for hardwood suppliers in your area. More for than likely they will have white oak or teak. Common home supply and lumber yards have a lower chance of supplying these hardwoods. Just sawed up a bunch of white oak on the Woodmizer mill here in New Hampshire. UPS will only ship 96” lengths.
Last edited by tom moore; 07/12/2020 4:27 PM.