Browalia americana (Amethyst Flower,)
In tropical South-America this is a perennial, elsewhere it is raised as an annual. Browalia prefers dappled shade. The little bright blue flowers with a white eye appear incessantly until the first frost. This is the original (wild) form with long stalks (60 cm). It is suitable for the garden, the border, the cut flower corner and also does well in large pots. 500s