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Persicaria wallichii

Fraser’s Gully, Dunedin.<br>Photographer: John Barkla, Date taken: 01/04/2013, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Fraser’s Gully, Dunedin.<br>Photographer: John Barkla, Date taken: 01/03/2013, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

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Common names

Indian knotweed

Biostatus

Exotic

Structural class

Herbs - Dicotyledons other than Composites

Flower colours

White

Conservation status

Not applicable

Detailed taxonomy

Family

Polygonaceae

Authority

Persicaria wallichii Greuter & Burdet

Synonyms

Polygonum polystachyum, Persicaria polystachya

Ecology

Flowering

November, December, January, February, March, April, May

Fruiting

Doesn’t fruit in NZ

Year naturalised

1958

Origin

Temperate Himalayas

Reason for introduction

Unknown.

Life cycle and dispersal

Vegetative by stolons and/or rhizomes.

Other information

Etymology

persicaria: Medieval name referring to the likeness of the leaves to a peach tree

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