List of invasive plant species in New York

The identification and measurement of accelerated growth of particularly dangerous invasives has long been a subject of scientific study and data collection; the far ranging impact of invasive species spurred former New York State Governor Andrew Cuomo to allocate millions in funding to eradicate them. According to NYS Assembly Member Steve Englebright, Chair of the Assembly Environmental Conservation Committee, “Invasive plant and animal species are a significant threat to New York’s remarkable biodiversity with the potential to severely impact our forests, as well as our state’s agricultural and tourism economies."{{cite web|url=https://nysufc.org/governor-cuomo-announces-2-8-million-in-grant-awards-to-combat-spread-of-invasive-species/2019/06/23|title=Governor Cuomo Announces $2.8 Million in Grant Awards to Combat Spread Of Invasive Species|author=Michelle Sutton|publisher=New York State Urban Forestry Council|accessdate=November 1, 2019}}

Invasive species are often grouped by threat levels that vary from county to county from very high impact to remarkable increased growth.{{cite web|url=http://ccedutchess.org/environment/invasive-species|title=Invasive Species|publisher=Cornell Cooperative, Dutchess County|accessdate=October 14, 2019}} The list of invasive plants below is by no means comprehensive but nearly every species listed is scientifically proven to have detrimental impacts on native habitats and wildlife, including native birds in New York State. Plants are listed in Latin name order and level of threat. Since plants do not recognize any boundaries, many pose threats in neighboring states like Connecticut and New Jersey as well.

Current lists of invasive species in New York are maintained by various PRISMs (Partnership for Regional Invasive Species Management). There are 8 PRISMs in New York State.{{cite web|url=https://www.lhprism.org|title=Lower Hudson PRISM|accessdate=November 1, 2019}}{{cite web|url=http://www.dec.ny.gov/animals/47433.html|title=Partnerships for Regional Invasive Species Management (PRISM)|publisher=NYDEC|accessdate=November 2, 2019}}

"Very High"

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• Acer platanoides - Norway maple. This species is ranked 82.0 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://nyis.info/invasive_species/norway-maple|title=Norway Maple|publisher=Cornell Cooperative Extension and NY Sea Grant|accessdate=October 14, 2019}}{{cite web|url=http://adkinvasives.com/species_of_concern/norway-maple|title=Norway Maple|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Ailanthus altissima— Tree of heaven. This species is ranked 84.44 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/tree-of-heaven|title=Tree of Heaven|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}{{cite web|url=https://www.ecolandscaping.org/05/landscape-challenges/invasive-plants/tree-of-heaven-an-exotic-invasive-plant-fact-sheet|title=Tree of Heaven: An Exotic Invasive Plant Fact Sheet|accessdate=November 1, 2019}}
• Alliaria petiolata - Garlic mustard. This species is ranked 84.00 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/garlic-mustard|title=Garlic Mustard|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Aralia elata - Japanese angelica tree.{{cite web|url=https://www.lhprism.org/species/aralia-elata|title=Japanese angelica tree|publisher=Lower Hudson PRISM|accessdate=October 14, 2019}} This species is ranked 80.46 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/japanese-angelica-tree-not-yet-in-region/|title=Japanese Angelica Tree|publisher=Adirondack Park Invasive Plant Program|accessdate=November 2, 2019}}
• Berberis thunbergii - Japanese barberry. This species is ranked 91.0 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/japanese-barberry|title=Japanese Barberry|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Celastrus orbiculatus - Asian bittersweet. This species is ranked 86.67 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/asian-bittersweet|title=Asian Bittersweet|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}{{cite web|url=https://www.lhprism.org/species/celastrus-orbiculatus|title=Oriental bittersweet|publisher=LHPRISM|accessdate=November 2, 2019}}
• Elaeagnus umbellata - Autumn olive. This species is ranked 94 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/autumn-olive|title=Autumn Olive|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Euonymus alatus - Burning bush. New York allows the sale of this plant if it is labeled invasive. Sterile cultivars have also been developed. This species is ranked 81.25 (Very High) on the NYS Threat Assessment scale.{{cite web|url=https://vineyardgazette.com/news/2019/10/31/burning-bush|title=Burning Bush|publisher=Vineyard Gazette|location=Martha's Vineyard, Massachusetts|accessdate=November 1, 2019}}
• Fallopia japonica - Japanese knotweed. This species is ranked 97.94 (Very High) on the NYS Threat Assessment scale.{{cite web|url=https://www.eany.org/our-work/team-blogs/11-invasive-species-wreaking-havoc-ny|title=11 Invasive Species Wreaking Havoc on NY|author=Max Oppen|publisher=Environmental Advocates of New York|accessdate=October 14, 2019}}{{cite web|url=http://adkinvasives.com/species_of_concern/japanese-knotweed|title=Japanese Knotweed|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Lonicera japonica - Japanese honeysuckle
• Lonicera maackii - Bush honeysuckle. This species is ranked 84.50 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/bush-honeysuckles|title=Bush Honeysuckles|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Lythrum salicaria - Purple loosestrife. This species is ranked 91.0 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/purple-loosestrife|title=Purple Loosestrife|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Microstegium vimineum - Japanese stiltgrass. This species is ranked 85 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/japanese-stiltgrass|title=Japanese Stiltgrass|publisher=Adirondack Park Invasive Plant Program|accessdate=November 2, 2019}}{{cite web|url=http://nyis.info/invasive_species/japanese-stiltgrass|title=Japanese Stiltgrass|publisher=Cornell Cooperative Extension and NY Sea Grant|accessdate=November 2, 2019}}
• Miscanthus sinensis - Chinese silvergrass.
• Persicaria perfoliata - Mile-a-minute{{cite web|url=http://nyis.info/invasive_species/mile-a-minute|title=Mile-A-Minute|publisher=Cornell Cooperative Extension and NY Sea Grant|accessdate=November 3, 2019}}
• Phragmites australis - Common reed grass. This species is ranked 92.00 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/wp-content/uploads/2013/09/Adirondack-PRISM-Invasive-Plant-List_2013.pdf|publisher=Adirondack PRISM|title=Adirondack PRISM: Invasive and Non-Native Plants|accessdate=November 2, 2019}}{{cite web|url=http://nyis.info/invasive_species/common-reed|title=Common Reed|publisher=Cornell Cooperative Extension and NY Sea Grant|accessdate=November 2, 2019}}
• Ranunculus ficaria - Lesser celandine. This species is ranked 85.56 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/lesser-celadine|title=Lesser Celadine|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Rhodotypos scandens - Jetbead.{{cite web|url=http://nyis.info/wp-content/uploads/2018/01/a4ab3_Rhodotypos.scandens.NYS_.pdf|title=NEW YORK NON-NATIVE PLANT INVASIVENESS RANKING FORM-Jetbead|publisher=USDA|accessdate=October 14, 2019}}
• Rosa multiflora - Multiflora rose. This species is ranked 89.0 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/multiflora-rose|title=Multiflora Rose|publisher=Adirondack Park Invasive Plant Program|accessdate=November 1, 2019}}
• Rubus phoenicolasius - Wineberry. This species is ranked 85.56 (Very High) on the NYS Threat Assessment scale.{{cite web|url=http://nyis.info/invasive_species/wineberry|title=Wineberry|publisher=Cornell Cooperative Extension and NY Sea Grant|accessdate=October 14, 2019}}{{cite web|url=http://nyis.info/invasive_species/wineberry|title=Wineberry|publisher=Cornell Cooperative Extension and NY Sea Grant|accessdate=November 2, 2019}}
• Vincetoxicum rossicum - Pale swallow-wort {{div col end}}

"High"

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• Ampelopsis glandulosa— Porcelain berry. This species is ranked 71.26 (High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/species_of_concern/porcelain-berry-not-yet-in-region/|title=Porcelain Berry|publisher=Adirondack Park Invasive Plant Program|accessdate=November 2, 2019}}
• Centaurea maculosa— Spotted knapweed. This species is ranked 78.89 (High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/wp-content/uploads/2013/09/Adirondack-PRISM-Invasive-Plant-List_2013.pdf|publisher=Adirondack PRISM|title=Adirondack PRISM: Invasive and Non-Native Plants|accessdate=November 2, 2019}}
• Cirsium arvense— Canada or creeping thistle. This species is ranked 71.00 (High) on the NYS Threat Assessment scale.{{cite web|url=http://adkinvasives.com/wp-content/uploads/2013/09/Adirondack-PRISM-Invasive-Plant-List_2013.pdf|publisher=Adirondack PRISM|title=Adirondack PRISM: Invasive and Non-Native Plants|accessdate=November 2, 2019}}

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"Very High"

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• Cabomba caroliniana - Fanwort
• Hydrilla verticillata - Hydrilla.{{cite web|url=http://ccetompkins.org/environment/invasive-nuisance-species/aquatic-invasives/hydrilla|title=Hydrilla|publisher=Cornell Cooperative Extension Tompkins County|accessdate=November 2, 2019}}{{cite web|url=http://nyis.info/invasive_species/hydrilla|title=Hydrilla|publisher=NEW YORK INVASIVE SPECIES (IS) INFORMATION|accessdate=November 2, 2019}}
• Myriophyllum spicatum - Milfoil
• Potamogeton crispus - Curly leaf pondweed
• Trapa natans - Water chestnut.{{cite web|url=http://nyis.info/invasive_species/water-chestnut|title=Water Chestnut|publisher=Cornell Cooperative Extension and NY Sea Grant|accessdate=November 2, 2019}}

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• Invasive species in the United States

{{Reflist}}

• [http://www.invasivespecies.gov invasivespecies.gov] United States Government.

New York

Category:Flora of New York (state)

Invasive plant