From Livin' Off The Land: "Fences are useful for keeping weeds at bay and protecting your crops. They also let farmers contain their livestock. Fences break down after a while, but stone, iron, and hardwood fences last a lot longer!"
Fences are crafted from 2 wood, 2 stone, or 1 iron bar. They help to prevent grass and other farm debris from spreading, as well as forming animal pens. If an NPC encounters one in their route, it will be smashed automatically, as if the player used the corresponding tool,
Sells for 1 Gold Each'