Fallopia convolvulus

Tracheophyta MagnoliopsidaPolygonaceaeFallopiaFallopia convolvulus


An annual found in arable land, gardens, waste places, rubbish tips and on roadsides. 0-450 m (Clun Forest, Salop).



World Distribution

As an archaeophyte F. convolvulus has a Eurosiberian Wide-temperate distribution, but it is widely naturalised so that its distribution is now Circumpolar Wide-temperate.

© G. Toone, IWNHAS

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 4

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 5

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 14.9

Annual Precipitation (mm): 971

Height (cm): 100

Perennation - primary


Life Form - primary

Therophyte (annual land plant)



Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 2139

Count of 10km squares in Ireland: 519

Count of 10km squares in the Channel Isles: 13

Atlas Change Index: -1.31

Weighted Changed Factor: -4

Weighted Change Factor Confidence (90%)


JNCC Designations


Atlas text references

Atlas (176b)
Grime JP, Hodgson JG, Hunt R
1988.  Comparative Plant Ecology.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Hume L, Martinez J, Best K
1983.  The biology of Canadian weeds. 60. Polygonum convolvulus L. Canadian Journal of Plant Science. 63:959-971.
Jalas & Suominen (1979)
Lousley JE, Kent DH
1981.  Docks and knotweeds of the British Isles. Botanical Society of the British Isles Handbook no. 3.