This photographic companion to Michael Dirr's groundbreaking book offers 921 beautiful photographs of virtually every type of hydrangea. Including the most up-to-date nomenclature for all species and cultivars pictured, the software includes unique sign-making features perfect for nursery use. The high-resolution photographs are printable in five sizes and can be grouped together for personal lists or note-taking. Identification quizzes allow any user to master hydrangea naming.