Top 10 Invasive Plant Species in North America

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This aggressive plant can grow through concrete and asphalt, causing damage to structures and displacing native vegetation.

Japanese Knotweed:

Purple loosestrife forms dense stands along waterways, outcompeting native wetland plants and reducing habitat for wildlife.

Purple Loosestrife:

Common reed grows quickly and forms dense stands, displacing native plants and altering wetland habitats.

Common Reed:

Giant hogweed produces toxic sap that can cause severe burns and blisters on the skin. It also outcompetes native plants.

Giant Hogweed

Chinese privet forms dense thickets, crowding out native vegetation and reducing biodiversity.

Chinese Privet:

Japanese barberry invades forests and other natural areas, altering ecosystems and providing habitat for ticks that carry Lyme disease.

Japanese Barberry:

Also known as saltcedar, tamarisk is a highly invasive shrub that displaces native vegetation and alters hydrology in riparian areas.


Russian olive is a shrub or small tree that invades riparian areas, displacing native plants and altering habitat for wildlife.

Russian Olive:

Multiflora rose is a thorny shrub that forms impenetrable thickets, displacing native vegetation and reducing habitat for wildlife.

Multiflora Rose: