One of the flowers I’ve photographed a couple of times is Stock (matthiola incana) which supposedly is a common garden flower – but I’ve only seen it at a couple of botanical gardens and don’t ever remember seeing it available at local garden centers.
Stock (also known as hoary stock and tenweeks stock) are heavily scented members of the Brassicaceae (Mustard) family. Depending on the variety – some are annuals – other are ebiennials. The plants grow to about 18″ tall with an abundance of blossoms.