it was originally native to Switzerland, before spreading across Europe (to Portugal, Spain, France, England, Belgium, Germany, Italy, Croatia and Romania), and Morocco.

[1][7] In the Middle Ages it was used as a strewing herb to repel insects such as moths, lice and ticks and spread a good smell in private rooms.

[1] Achillea is a reference to the Greek hero Achilles, who was trained to use herbs by his mentor, the centaur Chiron.

[4] The flowers last for a relatively long period, hence the inclusion of ageratum in the species name.

A hardy perennial, it can be identified by its narrow and serrated leaves, and clusters of small, cream-coloured flowers.