Since our property was logged three years ago I have learned a bit about the subject and was aware that timber is marked with paint to indicate which trees are to be harvested and which are off limits to the logging crew. Accidentally harvesting a tree on the wrong property can cost a logger quite a bit so they often avoid taking the trees on property lines to prevent problems. When trees are marked they should put a mark around eye level and then one on the base so after the tree has been cut you can be sure it was a tree that was supposed to be harvested. What I didn't know is that purple marks mean stay out. The old fences on our property have been down in some areas for so long that you can barely find them in the underbrush even when you know that they are there somewhere, but often large tracts of forested land are impossible or unnecessary to fence so they created the purple paint law. You can mark your property against trespassers with signs, fences, or purple paint.
30.05. CRIMINAL TRESPASS
(2) "Notice" means:
(D) the placement of identifying purple paint marks on trees or posts on the property, provided that the marks are: (i) vertical lines of not less than eight inches in length and not less than one inch in width; (ii) placed so that the bottom of the mark is not less than three feet from the ground or more than five feet from the ground; and (iii) placed at locations that are readily visible to any person approaching the property and no more than: (a) 100 feet apart on forest land; or (b) 1,000 feet apart on land other than forest land; 30.05.
In some areas this is how land owners mark the line between national forests and bordering private land. I am curious to know how much paint I would have to buy in order to mark our property, but if I was going to do it I would use a can of Design Master Loganberry.