If you’ve seen a fence post or tree with a purple stripe, it’s not just for decoration – it carries an important message: Stay off this property. In many states, property owners use purple paint instead of traditional “No Trespassing” signs to mark private land. This method is more visible and durable, as signs can wear out or be stolen, while paint remains clear for longer without damaging trees.
The purple stripe should be painted 3-5 feet above the ground, at least 1 inch wide and 8 inches long, with marks every 100 feet. For trees, use spray paint made for marking, as oil-based paints can harm the tree.
Arkansas was the first state to adopt the “purple paint law” in 1989, and nearly half of all U.S. states now have similar laws. Keep an eye out for purple markings to avoid trespassing on private land.
