Lunar soil was brought back to Earth during the days of NASA’s Apollo program and scientists eagerly started conducting experiments with it. This short video discusses some of the research and results when plants from Earth were exposed to soil from the Moon.
You can read more about these experiments by visiting the blog post linked below. The blog post also contains additional links related to the research.
Gardening on the Moon [BoingBoing]
Growing Plants in Moon Dirt [YouTube]