Impatiens glandulifera

Tracheophyta MagnoliopsidaBalsaminaceaeImpatiensImpatiens glandulifera


This species is most frequent on the banks of waterways, where it often forms continuous stands, but is also established in damp woodland, flushes and mires. The tallest annual in Britain, its rapid growth can shade out even Urtica dioica. Lowland.



World Distribution

Native of the Himalayas; widely naturalised in temperate Europe.

Broad Habitats

Rivers and streams

Light (Ellenberg): 6

Moisture (Ellenberg): 8

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 15.1

Annual Precipitation (mm): 957

Life form information

Height (cm): 200

Perennation - primary


Life Form - primary

Therophyte (annual land plant)



Clonality - primary

Little or no vegetative spread

Distribution information

Count of 10km squares in Great Britain: 1599

Count of 10km squares in Ireland: 286

Count of 10km squares in the Channel Isles: 6

Atlas Change Index: 1.85

Weighted Changed Factor: 23

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.

Atlas text references

Atlas (96d)
Beerling DJ, Perrins JM
1993.  Biological Flora of the British Isles. No. 177. Impatiens glandulifera Royle. Journal of Ecology. 81:367-382.
de Bolòs O, Vigo J
1990.  Flora dels Països Catalans, II. Crucíferes-Amarantàcies.
Grime JP, Hodgson JG, Hunt R
1988.  Comparative Plant Ecology.