Irish wildflowers BSBI map

Knotgrass, Polygonum aviculare, Glúineach bheag
Photographs: Co. Cork

Knotgrass
Polygonum aviculare
Glúineach bheag
Family: Polygonaceae

Flowering time: July - October. Annual. Native.

Tiny white striped green flowers often tinged with pink. Leaves lanceolate to oval, hairless. Erect or sprawling growth habit. Can form large patches on bare ground. Height/spread: patches to 1m across.

Common on bare ground, wasteland, arable land. Nitrogen indicator. Resistant to trampling.

Similar: Equal-leaved Knotgrass, Polygonum arenastrum

Knotgrass, Polygonum aviculare, Glúineach bheag

Knotgrass, Polygonum aviculare, Glúineach bheag
Knotgrass, Polygonum aviculare, Glúineach bheag

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