
Paterson’s Curse | Echium plantagineum

Poison Hemlock | Conium maculatum

Pokeweed | Phytolacca americana

Policeman’s Helmet | Impatiens glandulifera

Prickly Lettuce | Lactuca serriola

Purple Loosestrife | Lythrum salicaria

Purple Nutsedge | Cyperus rotundus

Purple Starthistle | Centaurea calcitrapa

Sharp-leaved Fluvellin | Kickxia elatine

Spotted Jewelweed | Impatiens capensis

Spotted Knapweed | Centaurea stoebe

St. John's Wort | Hypericum perforatum
