This evergreen tree of plantations is generally grown in more exposed and higher rainfall areas than P. sylvestris, where it will cope with poor, wet soils. It regenerates from seed freely and becomes naturalised in suitable habitats, particularly heathland. The altitudinal range is unknown.
P. contorta was introduced in 1851 and was recorded from the wild by 1968. Foresters have struggled to develop varieties suited to our climate, but the tree is now extensively and increasingly planted in north and west Britain and Ireland. In many such areas it is currently the only economic alternative to Picea sitchensis.
Native of western N. America; widely planted in N. Europe.
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.