Filago vulgaris (Common Cudweed)


Summary Information


An autumn- or spring-germinating annual of dry, open, acidic to neutral and occasionally calcareous habitats including open grassland, quarries and rocky ledges, sand-pits and dunes, sandy heaths and tracks, and arable and other cultivated ground. Lowland.



World Distribution

European Southern-temperate element; also recorded in C. Asia. It reaches its northern limit in Scotland and Jutland.


Photos Information


Habitats Information

Broad Habitats

Boundary and linear features (eg hedges, roadsides, walls)

Light (Ellenberg): 7 Information

Moisture (Ellenberg): 4 Information

Reaction (Ellenberg): 6 Information

Nitrogen (Ellenberg): 4 Information

Salt Tolerance (Ellenberg): 0 Information

January Mean Temperature (Celsius): 3.8 Information

July Mean Temperature (Celsius): 15.5 Information

Annual Precipitation (mm): 832 Information

Life Form

Life Form Information

Height (cm): 35

Perennation - primary


Perennation - secondary

Life Form - primary

Therophyte (annual land plant)

Life Form - secondary



Clonality - primary

Little or no vegetative spread

Clonality - secondary


Distribution Information

Count of 10km squares in Great Britain: 980

Count of 10km squares in Ireland: 78

Count of 10km squares in the Channel Isles: 8

Atlas Change Index: -1.2

Weighted Changed Factor: 51

Weighted Change Factor Confidence (90%)


Conservation Status

Conservation Status Information

Plantatt Conservation Status

JNCC Designations

  • Scottish Biodiversity List of species of principal importance for biodiversity conservation
    The Scottish Biodiversity List is a list of flora, fauna and habitats considered by the Scottish Ministers to be of principal importance for biodiversity conservation. The development of the list has been a collaborative effort involving a great many stakeholders overseen by scientists from the Scottish Biodiversity Forum. Completion of the list is the first time such a stocktake has been done in Scotland. The Scottish Biodiversity List is a tool for public bodies and others doing their Biodiversity Duty. The publication of the Scottish Biodiversity List satisfies the requirements of Section 2(4) of The Nature Conservation (Scotland) Act 2004.
    Source: IUCN Criterion: S5 - >25% Scottish Decline over 25 years or other appropriate time period; . Source: Scottish Biodiversity List of species of principal importance for biodiversity conservation
    Geographical constraint: Listing is for Scotland only
  • IUCN (2001) - Lower risk - near threatened
    A taxon is Near Threatened when it has been evaluated against the criteria but does not qualify for Critically Endangered, Endangered or Vulnerable now, but is close to qualifying for or is likely to qualify for a threatened category in the near future.
    Source: IUCN Criterion: A. Source: The Vascular Plant Red Data List for Great Britain - 2006 Cheffings, C. and Farrell, L. (Editors) and A tool for assessing the current conservation status of vascular plants on SSSIs in England- May 2006, ENRR 690 (Leach & Ru

Other Accounts

Other Accounts Information


References Information

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