An astronaut hid seeds in his luggage bound for the Moon: decades later they are still growing across the country

In 1971 Stuart Roosa — the command module pilot of Apollo 14 — carried hundreds of tree seeds around the Moon.
Scientific American

One Small Step Back in Time: Relive the Wonder of Apollo 11

On July 20, 1969, at 20:17 UTC, Commander Neil Armstrong and lunar module pilot Edwin “Buzz” Aldrin landed on the moon as ...