From the Disney Parks YouTube Channel:

Although the 2013 Epcot International Flower & Garden Festival officially opens Wednesday, March 6, one new garden has appeared a little early. The Land of Oz Garden is open now and at almost a third of an acre, it’s the largest garden ever created for the festival. The area is based on the new Disney film, “Oz The Great and Powerful,” which stars James Franco, Michelle Williams, Rachel Weisz and Mila Kunis, and opens March 8.

http://www.youtube.com/watch?v=OzCt4E1qjbg