Mark Weathington is the director of the JC Raulston Arboretum at NC State University in Raleigh, North Carolina and author of Gardening in the South: The Complete Homeowner's Guide. Mark is a frequent FG contributor, covering a wide range of topics including magnolias, redbuds, compact shrubs, and unexpected replacements for overused plants. Some of Mark's most fascinating work at the arboretum has involved his extensive travel to collect, preserve, and distribute plants from around the world. In this episode he discusses the unexpected path that led to a career in horticulture and the international collaborations that are helping to conserve endangered species and bring diversity to American landscapes.