I think both are kind of stringy and won't turn well. I don't think rotting is a problem.
Frasier: Niles, I’ve just had the most marvelous idea for a website! People will post their opinions, cheeky bon mots, and insights, and others will reply in kind!
A black locust fencepost lasts about a week less than a granite one. I think that if you seal your plugs, rot isn't a problem. If they work right , they're pretty much toast after a season anyway.
He that would make his own liberty secure, must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself.
Thomas Paine