Reseda luteola. Also known as Dyer’s Rocket. An erect biennial with basal rosettes of narrowly-ovate, dark green leaves and erect stems bearing narrowly-ovate to linear, dark green leaves topped with extremely fragrant, spike-like racemes of yellow-green flowers in summer. Traditionally grown for use as a natural dye, it gives a brilliant and fast yellow colour, it was also grown for the sweet honey scent of its flowers which the Victorians used in arrangements and perfumery to cover up unsavoury smells.
Grow in a sunny position. It will reach a height of 1.5m and a spread of 50cm.