Two new for Wrocław localities of Artemisia annua L., the species not recognised since 1976 in this city, has been found. The plant grew on a sack with sand, on railway and on a new sidewalk near a church. Formerly it was reported within Wrocław city limits several times, usually from rubbish. This paper presents short description of this species, its ecological and climatic requirements, information of geographical distribution in the world and in Europe, medical importance, capacity for expansion and an issue of cultivation.