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 2023
The following map is interactive. If you would prefer to view it full screen then click here.
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)