University of Illinois at Urbana-Champaign is one of the most popular schools in the United States for getting a doctor's degree in plant sciences. UIUC is a very large public university located in the small city of Champaign. This isn't the only ranking where the school placed. It's also #1 in quality for doctor's degrees in plant sciences in Illinois. More information about a doctorate in plant sciences from University of Illinois at Urbana-Champaign