In this episode of This Old Tree, Doug introduces us to London's Charlton House Mulberry. Did you know the British are mad about mulberries? A 415-year-old black mulberry tree stands at Charlton House & Gardens, the oldest specimen in London and highly beloved. Its story involves King James I and a courtier named Sir Adam Newton, the tutor to the King's eldest son, Henry. It also involves a government decree gone awry.