A great performer, Alan Williams is a highly scented, mid-blue variety. A garden favorite as well as an excellent cut flower. Spencer varieties were originally developed by Silas Cole, head gardener for the Earl of Spencer at Althorp (the family of Diana, Princess of Wales). Spencer types have much larger, wonderfully ruffled upper or ‘standard’ petals, longer lower ‘wing’ petals and much showier blossoms overall. They come in a wide range of colors and have large flowers with four to five blooms to a stem. Grows 6-7 feet tall. Full sun. Photo courtesy of Plants Interactive Encyclopedia.