Tanacetum balsamita. Also known as Costmary. A tall hardy perennial which has grey-green leaves that have a strong mint and balsam scent. Small yellowish daisy flowers are borne in August. It has been widely grown since medieval times in herb gardens and earlier centuries for medical purposes (astringent and antiseptic). Use fresh leaves in salads or dried into pot-pourri, as it retains its aroma. The root’s can be used as a spice and a preserve, it gives a spicy flavour to ale, hence Alecost.
Grow in a medium soil in a sunny position. It will reach a height of 60-90cm.