Parietaria judaica

Tracheophyta MagnoliopsidaUrticaceaeParietariaParietaria judaica


A much-branched perennial herb growing from the cracks and mortar crevices of brick and stone walls, on building rubble, rocks, cliffs and steep-sided hedge banks. It prefers dry, sunny, sheltered spots, and is often found in built-up areas or not far from habitation. Lowland.



World Distribution

Submediterranean-Subatlantic element; also in C. Asia.

© Shannon, P

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 4

Reaction (Ellenberg): 8

Nitrogen (Ellenberg): 5


Salt Tolerance (Ellenberg): 1

January Mean Temperature (Celsius): 4.1

July Mean Temperature (Celsius): 15.6

Annual Precipitation (mm): 865

Life form information

Height (cm): 52

Perennation - primary


Life Form - primary




Clonality - primary

Little or no vegetative spread

Distribution information

Count of 10km squares in Great Britain: 1336

Count of 10km squares in Ireland: 317

Count of 10km squares in the Channel Isles: 14

Atlas Change Index: 0.08

Weighted Changed Factor: 20

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 (181d)
de Bolòs O, Vigo J
1990.  Flora dels Països Catalans, II. Crucíferes-Amarantàcies.
Jalas & Suominen (1976)