Stock flower (Matthiola incana), also known as gilly flower or hoary stock, is a hardy biennial plant that brings splashes of colour and a sweet and spicy fragrance to a cottage or informal garden. With clusters of blooms forming a frilly spire of petals and soft narrow green-grey leaves, it also makes a long-lasting cut flower. The species is native to southern Europe and has purple flowers, but many single- and double-flowered cultivars have been developed in a range of colours, from white and yellow through every shade of pink, to red and purple. Stocks attract pollinating insects to the garden.