A perennial herb with familiar sage-green leaves. Prefers an acidic soil.
Upright spikes of straw-coloured flowers can be seen from July to September. It produces plentiful amounts of seed that provide a great source of food for birds.
Used medicinally, it is harvested in July and can be dried for later use. The herb is often used in domestic herbal practice in the treatment of skin afflictions, diseases of the blood, fevers, colds.
Other uses: The plant is said to resemble hops in taste and flavour. An infusion of the leaves and flowers is used as a hop substitute for flavouring beer in some areas.