Levisticum officinale. Tall addition to the back of the herb garden with its hollow stems covered in dark green leaves and greeny yellow flowers in Jun/July. All parts have a similar flavour to celery. Height 1 - 1.2 metres. A much underused herb that imparts a deliciously savoury edge to soups, stews and sauces. Hardy perennial. Priced for a 1 litre pot