Fruits From A Poisonous Tree Apr 2026

If police perform an illegal traffic stop and find a key to a locker, any evidence found inside that locker is "fruit" of the illegal stop. Unless one of the exceptions applies (like proving they were already planning to search that locker), the evidence from the locker will be suppressed in court.

The doctrine is a legal rule that makes evidence inadmissible in court if it was derived from an illegal search, seizure, or interrogation. This guide breaks down the core metaphor, its legal application, and the critical exceptions that allow such evidence back into a trial. 1. The Core Metaphor Fruits from a Poisonous Tree

The evidence was also discovered through a separate, legal source completely unrelated to the illegal action. If police perform an illegal traffic stop and

The initial illegal action taken by law enforcement, such as a search without a warrant or a coerced confession. This guide breaks down the core metaphor, its

The doctrine uses a simple biological analogy to protect constitutional rights:

The Supreme Court first established the principle in Silverthorne Lumber Co. v. United States (1920).

The 1963 case Wong Sun v. United States clarified that evidence is only suppressed if it was obtained by "exploitation of that illegality" rather than through a separate, clean path. 3. Key Exceptions