Irish wildflowers

Photographs: Reenaree, Co.Cork

Himalayan Knotweed
Persicaria wallichii
Glúineach spíceach
Family: Polygonaceae

Flowering: August-September. Perennial. Introduced. Garden escape.

White or pinkish-white flowers in loose panicles.
Narrow-ovate to lanceolate leaves, sometimes hairy on underside.
Forms thickets, spreads by means of rhizomes. Invasive. Height: to 1.5m

Increasingly found on roadsides, river banks, waste ground.

Similar: Giant Knotweed, Fallopia sachalinensis.
To 3m, greenish-white flowers.

Photographs above: Reenaree, Co.Cork. October 2006

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