Narrowleaf knotweed vs Prostrate knotweed

Polygonum bellardii compared with Polygonum aviculare

Taxonomic Classification

Rank	Narrowleaf knotweed	Prostrate knotweed
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Caryophyllales (Caryophyllales)	Caryophyllales (Caryophyllales)
Family same	Polygonaceae	Polygonaceae
Genus same	Polygonum	Polygonum
Species	Polygonum bellardii	Polygonum aviculare

Evolutionary Relationship

Narrowleaf knotweed and Prostrate knotweed share a common ancestor at the Genus level: Polygonum.

Conservation Status

Narrowleaf knotweed

NE — Not Evaluated

Prostrate knotweed

NE — Not Evaluated

Physical Characteristics

Attribute	Narrowleaf knotweed	Prostrate knotweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Narrowleaf knotweed

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Europe (12 countries), North America (United States), and Oceania and the Pacific (Australia).

Prostrate knotweed

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Africa (9 countries), Asia (8 countries), Europe (11 countries), North America (6 countries), Oceania and the Pacific (Australia, Solomon Islands), and South America (7 countries).

Shared Countries

Both species can be found in 8 countries:

🇦🇺 Australia 🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇷🇺 Russia 🇸🇪 Sweden 🇺🇸 United States