Dame's-violet (Hesperis matronalis)
Medium to tall erect plant, stems unbranched. Leaves lanceolate and short stalked. The flowers are large, white or purple, 15 to 20 mm, in broad panicles and they are fragrant.
A perennial, or sometimes biennial, herb. It is often well-naturalised, but only where there is little competition. Casual plants occur on tips and in waste places.
May to July.