I've read locust trees were OK for fence posts (rot resistant, I guess?) Got a lot of small straightish ones that need taking out of overgrown field. Has anyone used them for that or any other purpose? I suppose the all over wicked thorns will have to be skinned of with a knife or something. If they're good, maybe I'll leave the tiny ones to grow posts for later. Or are they really slow growing? Did I read that they're poisonous (not good to burn,then)?