The range of lodgepole pine extends over 26 million hectares of north-west America, where climates vary from the bitter cold Yukon to the very mild Californian coast. It occurs from sea level to 3900 min elevation. Over millions of years it evolved into a species which shows more variability than any other conifer. Practical forest research aims to discover the most suitable origins for use on the wide variety of sites which occur in Britain. This Technical Paper discusses in detail the results of the seed origin experiments which began in 1928 and ran for 45 years. This publication is still available to order in hardcopy.
A4 | 141 pages | colour cover