Achillea ptarmica

Tracheophyta MagnoliopsidaAsteraceaeAchilleaAchillea ptarmica


A perennial herb of damp or wet habitats on a wide range of soils, including fen- and water-meadows, rush-pasture, marshes, streamsides, wet heath, springs and flushes on hill slopes and occasionally in wet woodland. It is also established from cultivation in churchyards, and on roadsides and waste ground. 0-770 m (Cross Fell, Cumberland).



World Distribution

Eurasian Boreo-temperate element; widely naturalised outside its native range.

© S. Hammonds

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 7

Moisture (Ellenberg): 7

Reaction (Ellenberg): 5

Nitrogen (Ellenberg): 3


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.3

July Mean Temperature (Celsius): 14.3

Annual Precipitation (mm): 1146

Life form information

Height (cm): 60

Perennation - primary


Life Form - primary




Clonality - primary

Rhizome shortly creeping

Comment on Clonality

may be widely spreading; it is regarded as inconveniently invasive by gardeners

Distribution information

Count of 10km squares in Great Britain: 2382

Count of 10km squares in Ireland: 492

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.65

Weighted Changed Factor: -11

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