'Weedkiller' plant.(除雜草植物) Besides its nematodicidal and insecticidal properies, it destroys noxious weeds, (消滅雜草) including (包括)ground elder, bindweed, couch grass and ground ivy. AIso effective mosquito control. In South America, dried leaves are used to flavour soups, meats and vegetables. Recent research suggests it has powerful anti-viral properties. Tall (up to 2 metres) erect habit; rarely flowers in temperate zones.
