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Alligatorweed
(Alternanthera philoxeroides)
As of April 2019, there are 398 invasive species being
tracked in the Pennsylvania iMapInvasives database.
All tracked species are considered invasive because they are non-native to Pennsylvania and known to cause
harm to the economy, environment, or human health. All tracked species have either been discovered
in Pennsylvania or are known to exist in neighboring states.
Contact the state administrator if you would like to add a new species to our tracked list.
Red-eared slider
Trachemys scripta elegans Photo credit: © Rosmarie Alenius/Flickr
Flowering rush
Butomus umbellatus Photo credit: © Julia Roeser/Flickr
Oriental bittersweet
Celastrus orbiculatus Photo credit: Flickr user "Slow Turning"
Red swamp crayfish
Procambarus clarkii Photo credit: © Ted van den Bergh/Flickr
Tracked Species
ALL SPECIES
View all species currently tracked in the Pennsylvania iMapInvasives database.
SPECIES CATEGORIES
View tracked species by category.