HANGING POSTED SIGNS (or other light gauge signs on trees)
Our standard posted signs come in either .012 aluminum or .024 plastic. This material is very easy to drill, nail or staple through and holes, therefore, are not needed.
It is best whenever possible to use aluminum nails so that if the trees are ever harvested the saws will easily cut through them. In addition, you will want to leave the nail head about 3/8" out so that the tree has room to grow and will not push the sign off of the nail.
It is also best to attach all four corners to the tree so that the wind cannot get under them as easily. It will also make it a little more difficult for people to pull them off.