Origin: Central and East Asia (China, India, Afghanistan)

First finding in Slovenia: not yet found in Slovenia

Pathways: ornamental plant

Possible to find: year round

Flowering season: July – September

Habitat: Forests, scrubland, and open areas.

Status in Slovenia: In Slovenia not yet found in nature. Invasive in northern Europe; naturalised in Central Europe. 

Similar species: Large knotweeds: Fallopia japonica, Fallopia x bohemica, Polygonum orientale. Native knotweeds are much smaller (among others: P. persicaria, P. hydropiper and P. mite.

Source: Terenski priročnik za prepoznavanje tujerodnih vrst v gozdovih (Fieldguide for the identification of alien species in forests)

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