Heracleum sosnowskyi (family Apiaceae) is one of three closely resembling tall invasive hogweeds, next to Heracleum mantegazzianum and Heracleum persicum. The plant is native to the Caucasus. In the northwest of the former Soviet Union, the plant was cultivated for silage. In the 1980’s the species started to spread, and now occurs wide-spread in the Baltic states. As far as is known, the plant has not yet been observed in the Netherlands.