Over the winter, I cut a bunch of prunus padus (bird cherry/hackberry) to let some more sun into one of our growing areas, and I was wondering; does anyone out in permieland have any experience with using prunus padus as fence posts? I have about 3 kilometers of fencing that needs to be put up (not all at once, thank the gods) and if I can use the stuff I cut anyway, it'd be good, but I'm *powerfully* uninterested in setting several dozen posts that I'll have to replace in a couple of years, so if it rots quickly in the ground, I'll use them for heat next winter instead.
I would not recommend them for fence posts. My experience is that the bark is very resistant to decay but the wood rots very rapidly. I have used them as props with only the end on the ground and come back to discover the bark standing there almost hollow. It is a sturdy wood for applications where it is kept dry and is attractive to look at. It is very dfificult to split because of the bark.