Justin Filipowski (left) and Peter Curtis, dressed in 18th-century post-Colonial costume, harvest hemp at Mount Vernon, George Washington’s historic plantation. It is the first hemp crop harvest on this Founding Father’s estate in decades, maybe centuries.

Justin Filipowski (left) and Peter Curtis, dressed in 18th-century post-Colonial costume, harvest hemp at Mount Vernon, George Washington’s historic plantation. It is the first hemp crop harvest on this Founding Father’s estate in decades, maybe centuries.