As warmer weather draws people outdoors, it’s important to recognize a little-known warning: a purple fence post means no trespassing.

Property owners use purple paint to mark private land, replacing traditional signs that fade or fall over time.

The bright color serves as a long-lasting deterrent, legally equivalent to a posted sign.

The concept began in Arkansas in 1987, becoming known as the Purple Paint Law. Today, 22 states recognize this rule,

allowing landowners to paint posts, trees, or fences to mark their boundaries. While some states, like Idaho and Montana,

use orange instead, the meaning remains the same — entry without permission is prohibited.

To comply, the purple stripe must be 3 to 5 feet high, at least 8 inches long, and 1 inch wide, spaced no more

than 100 feet apart. These markings are an easy, durable way to protect private property and reduce the need for physical signs.

If you see purple paint while hiking or exploring, it’s not decoration — it’s a legal warning. Respect the boundary,

and share this knowledge to help others understand the Purple Paint Law and avoid accidental trespassing.