List of invasive plant species in Pennsylvania

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Numerous plants have been introduced to the US state of Pennsylvania in the last four hundred years and many of them have become invasive species that compete with the native plants and suppress their growth.

Description[]

Invasive species are often grouped by threat levels that vary from county to county from very high impact to remarkable increased growth. The species below are by no means comprehensive and are listed in type order rather than level of threat[1][2][3]

The Pennsylvania Department of Conservation and Natural Resources ranks invasive species into 3 categories based on urgency of threat. [4]

Terrestrial Plants and Trees[]

Picture Scientific Name Common Name
Spitz-Ahorn(mbo).jpg
 Acer platanoides Norway maple
Ailanthus-altissima.jpg
 Ailanthus altissima tree of heaven
Alliaria petiolata marais-belloy-sur-somme 80 26042007 3.jpg
 Alliaria petiolata garlic mustard
Aralia elata en fleur4081.jpg
 Aralia elata Japanese Angelica tree
Berberis thunb frt.jpg
 Berberis thunbergii Japanese barberry
2014-11-11 14 33 05 Euonymus alatus foliage during autumn along Idaho Street in Elko, Nevada.jpg
 Euonymus alatus winged spindle
Honeysuckle-2.jpg
 Lonicera japonica Japanese honeysuckle
Phragmites australis Schilfrohr.jpg
 Phragmites
Reynoutria japonica in Brastad 1.jpg
 Reynoutria japonica Asian knotweed
Illustration of Rhamnus catharticus 63-cropped.png
 Rhamnus cathartica buckthorn
Rhodotypos-scandens.JPG
 Rhodotypos scandens jetbead
Rosa-multiflora2.jpg
 Rosa multiflora multiflora rose
Japanse wijnbes rijpe vruchten.jpg
 Rubus phoenicolasius Japanese wineberry
Saccharum ravennae - J. C. Raulston Arboretum - DSC06214.JPG
 Saccharum ravennae ravenngrass
Frangula-alnus-fruits.JPG
 Frangula alnus alder buckthorn
Galegaofficinalis03.jpg
 Galega officinalis goat's-rue
Herkulesstaude fg01.jpg
 Heracleum mantegazzianum giant hogweed
Phellodendron japonicum.jpg
 Phellodendron cork-tree
KudzuPlants.JPG
 Pueraria kudzu
Vencetósigo negro - Vincetoxicum nigrum (15060096286).jpg
 Vincetoxicum nigrum black swallowwort
Vincetoxicum rossicum1UME.JPG
 Vincetoxicum rossicum pale swallowwort
Morus alba - Tehran.JPG
 Morus alba white mulberry

See also[]

References[]

  1. ^ "Invasive Plant Sheets". Pennsylvania Department of Conservation & Natural Resources. Retrieved October 15, 2019.
  2. ^ "Invasive Species". Landscope America. Retrieved October 15, 2019.
  3. ^ "Invasive and Unwelcome Species". Western Pennsylvania Conservancy. Retrieved October 15, 2019.
  4. ^ Marcus Schenck. "Invasive Plants are Swallowing Pennsylvania". Penn Live, Patriot News. Retrieved October 15, 2019.

External links[]

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