Biosafety Consensus Documents are intended to be a snapshot of current information on a specific host organism or trait, for use during regulatory assessments. They are being published on the biology of certain plant species, on selected traits that may be introduced into plant species, and on biosafety issues arising from certain general types of modifications made to plants. This consensus document addresses the biology of Western White Pine (Pinus Monticola Dougl. Ex D. Don). It contains information on forestry practices related to Western White Pine as well as more specific information on taxonomy, natural distribution, reproductive biology, genetics, hybridisation and ecology of this species.