Author 'Gipsy34' (Id 208710 ) : The eupatoire to hemp leaves or eupatoire chanvrine is a perennial herbaceous plant of the family asteraceae. This is a great plant to 60 cm to 1. 50 m high. Flowering occurs in late summer, early fall, and believed in the wetlands up to 1700 m altitude. It can be found in the whole of France. It is a melliferous plant is very popular with the butterflies.