Spear Thistle
Cirsium vulgare (Savi) Ten.
Plant family: Asteraceae 
Biologic group: Biannual

Hoary Alison
Berteroa incana (L.) DC.
Plant family: Brassicaceae 
Biologic group: Biannual

Marsh Ragwort
Senecio aquaticus Hill
Plant family: Asteraceae 
Biologic group: Biannual

Marsh
Alopecurus geniculatus L.
Plant family: Poaceae 
Biologic group: Biannual to perennial

Giant Hogweed
Heracleum mantegazzianum Sommier & Levier
Plant family: Apiaceae 
Biologic group: Biannual to perennial