Range
Native to western North America from British Columbia to California including in the interior mountain ranges.
Provenance Choice
There has been no provenance testing; seed sources from British Columbia or Washington should be suitable.
Site Requirements
Grows on sites of poor to rich soil nutrient regime and of slightly dry to moist moisture status; the species tolerates slightly wetter and heavier soils than Weymouth pine. It is not suited to peats or alkaline soils. This is an early successional species of intermediate shade tolerance which naturally grows in mixture with silver firs and other pines. It is cold hardy throughout Britain but is not tolerant of exposure.
ECOLOGICAL SITE CLASSIFICATION TOOLPests and Pathogens
This species is vulnerable to white pine blister rust. Heterobasidion (Fomes root and butt rot) is also considered to be an important pathogen of western white pine.
