Kudzu
Kudzu

Pueraria montana var. lobata Photo credit: Matthew Erb/Tree Pittsburgh

Mile-a-minute
Mile-a-minute

Polygonum perfoliatum Photo credit: Lindley Ashline/Flickr

Goatsrue
Goatsrue

Galega officinalis Photo credit: Sarah Gregg/Flickr

Tropica soda apple
Tropica soda apple

Solanum viarum Photo credit: © L'herbier en photos/Flickr

Pennsylvania & Federal Noxious Weeds

A noxious weed is a plant species that has been designated by a country, state, or national agricultural authority as one that is injurious to agricultural and/or horticultural crops, natural habitats and/or ecosystems, and/or humans or livestock.

Common: Species found in at least 1/3 of Pennsylvania counties. (This does not include cultivated species.)

Uncommon: Species found in Pennsylvania, but not widespread (i.e., found in less than 1/3 of Pennsylvania counties.)

Not present: Species not yet found in Pennsylvania.

*Status column last updated in August 2016.