Cabinet of Ministers Regulations No. 468 in Riga, 30 June 2008 (pr. 8. § 44) invasive plant species list Issued under the plant protection act, article 5, paragraph 1, rule 16 confirms the list of invasive plant species. 2. Invasive plant species in the Hogweed Heracleum Sosnovsk is of the Manden sosnowsky. The Prime Minister's site-traffic Minister a. shlesers Minister of Agriculture m. rose