Invasive

Species Types

Italian arum

Arum italicum

yellow-flag-iris-invasive

Yellow flag iris

Iris pseudacorus

Photo: USDA

Purple loosestrife

Lythrum salicaria

white-yellow fuzzy flowers above dense leaves of japanese knotweed
spurge laurel
orange hawkweed_Gail Hampshire

Orange hawkweed

Hieracium aurantiacum

Pokeweed USDA_Jeff McMillian
false brome

False brome

Brachypodium sylvaticum

Goatsrue

Giant hogweed

Heracleum mantegazzianum

Butterfly bush

Buddleia davidii

Tree of Heaven

Ailanthus altissima