PRNewswire -- Flowers take center stage as a cast of thousands welcome springtime at Biltmore’s Festival of Flowers, April 4 - May 17. In concert with the opening, on April 4, of a suite of four restored rooms inside Biltmore House, the annual estate-wide event celebrates the beauty of George Vanderbilt’s 8,000-acre property and its original design by Frederick Law Olmsted, father of American landscape architecture.