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Weed Seed: Pueraria montana (Kudzu)

Invasive Plant - Kudzu (Pueraria montana)



Common name



Prohibited Noxious, Class 1 in the Canadian Weed Seeds Order, 2016 under the Seeds Act. All imported and domestic seed must be free of Prohibited Noxious weed seeds.

Listed on the List of Pests Regulated by Canada established under the Plant Protection Act.


Canadian: One known population in southern ON under official control.

Worldwide: Native to eastern and southeastern Asia and introduced to southern Australia, South America, South Africa, New Zealand, central and eastern Europe and the United States (Lindgren et al. 2013Footnote 1). There are severe infestations in the southeastern United States (CFIA 2014Footnote 2).

Duration of life cycle


Seed or fruit type


Identification features



Surface texture


Other features

Habitat and crop association

Abandoned fields and field edges, grasslands, pastures, natural forests, plantations, fencerows, roadsides, riverbanks and urban areas (CFIA 2012Footnote 3, 2014Footnote 2).

General information

Kudzu was planted as a soil stabilizer in the 1930s and 40s in the southeastern United States, where it persists today (CABI 2016Footnote 4). In China and Japan, it is cultivated for forage, starch, food and medicine (CABI 2016Footnote 4).

In recent years it has also been considered for biofuel use (Sage et al. 2009Footnote 5). In its native range, kudzu grows best in areas with mild winters, hot summers and at least 100 cm of annual precipitation (CABI 2016Footnote 4). It is known for its rapid vegetative growth and for quickly overwhelming native species (Forseth Jr. and Innis 2004Footnote 6).

Similar species

Sainfoin (Onobrychis viciifolia)


Kudzu (Pueraria montana) seeds
Kudzu (Pueraria montana) seeds
Kudzu (Pueraria montana) seed
Kudzu (Pueraria montana) seed, hilum view

Similar species

Similar species: Sainfoin (Onobrychis viciifolia) legume and seeds
Similar species: Sainfoin (Onobrychis viciifolia) seed
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