Native to much of Europe, Asia, and Northern Africa, common mallow is a popular garden plant that has become an introduced species in eastern Australia, the United States, Canada and Mexico. It also goes by the names of Hollyhock Mallow, High Mallow, Tall Mallow, Blue Mallow, Cheese-cake, Pick-cheese, Round Dock, Country-mallow, Wild Mallow, and Wood Mallow.
Several different cultivars exist. These particular flowers are of the Zebrina cultivar (perhaps Zebrina Zebra Magis?), also known as Zebra Hollyhock.