Taxonomy

Persicaria campanulata | Lesser Knotweed

Distribution

Status

Invasiveness

Non-native species - Low risk of Impact

Irish status

Established

Invasive score

8

Species Biology

Ecology

The GB Non-native Species Secretariat (2011) note: It is generally considered to be non-invasive owing to its limited dispersal ability, although it can become abundant in gardens. It spreads over short distances (a patch 12 m across has been recorded in Cardiganshire) by stolons. Seed is not produced in GB. Dispersal of rhizomes is the main mechanism of dispersal, usually deliberately, but on riverbanks and roadsides this can occur naturally or accidentally. In towns throughout GB; generally established in the wild only in the west. See: 

Broad environment

Terrestrial

Species group

Plant

Native region

Temperate Asia

Distribution

World distribution(GBIF)

Temporal change

Records submitted to Data Centre in 2020

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Further information

GB Non-Native Species Secretariat (2011). Lesser Knotweed, Persicaria campanulata. Available online: http://www.nonnativespecies.org/factsheet/factsheet.cfm?speciesId=2598 [Accessed: 29/11/2017)

Images