Disphyma crassifolium (Purple Dewplant)


This procumbent, succulent, semi-woody perennial is often grown in gardens in mild, coastal areas and has become well naturalised on walls, cliffs and sandy places near the sea. In Jersey, it also grows under conifers and in a salt marsh. Elsewhere, it occurs as a wool shoddy casual. Although viable seed is produced, reproduction in Britain is from the rooting of detached stem fragments. Lowland.



World Distribution

Native of Cape Province, S. Africa; similar (possibly conspecific) taxa occur in Australasia.

Broad Habitats

Light (Ellenberg): 9

Moisture (Ellenberg): 3

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 5


Salt Tolerance (Ellenberg): 3

January Mean Temperature (Celsius): 6

July Mean Temperature (Celsius): 16.1

Annual Precipitation (mm): 898

Life form information

Height (cm): 9

Perennation - primary


Life Form - primary




Clonality - primary

Extensively creeping and rooting at nodes

Count of 10km squares in Great Britain: 20

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 3

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

The Aizoaceae naturalised in the British Isles,
Preston, C. D., and Sell P. D.
, Watsonia, Volume 17, p.217-245, (1989)