BugwoodWiki Article

Bohemian knotweed
Fallopia x bohemica (Chrtek & Chrtkov√°) J.P.Bailey


Fallopia x bohemica is a perennial that can grow from 6-12 ft. (1.8-3.7 m) tall.
Stems are usually erect, clustered, and glabrous. Leaves are ovate, base is truncate to cordate, entire margins, and acute tips.
Flowers are white to pink, 0.16-0.24 in. (4-6 mm), tepals are obovate to elliptic, and apex is obtuse to acute. Flowering occurs between July and October.
The fruits are dark brown in color, shiny, 0.08-0.12 (2-3 mm) long, smooth, and three sided with flat wings that are 0.06-0.08 in. (1.5-2.1 mm) wide.
Ecological Threat
Fallopia x bohemica prefers disturbed areas such as fields, pastures, and along roadsides and railways. It is native to Japan.

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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org

State Invasives List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Caryophyllidae
Order: Polygonales
Family: Polygonaceae
Genus: Fallopia


Category: Forbs/Herbs
Category: Shrub or Subshrub


Common Name Reference: Derived from taxonomy / Generic common name

Scientific Name Reference: Derived from taxonomy / Generic common name