Settlement of hogweed Sosnovsky (Heracleum sosnowskyi Manden.) on the Lososinka river (within the city of Petrozavodsk).
Hogweed Sosnovsky is a dangerous invasive species of flora of the European part of Russia. Hogweed Sosnovsky may appear on the river is a result of the hydrochoric distribution of seeds. The distribution of hogweed Sosnovsky in an urbanized area requires the attention of environmental services.