Choice of seed origin can be a very critical stage in forest management, in some cases resulting either in flourishing plantations or else in complete failure. This Bulletin is directed at both manager and researchers. The former are succinctly guided to appropriate seed origins for their site conditions and objectives, and equally importantly warned off unsuitable sources. It is very much in the grower’s interest that he should be sufficiently knowledgeable to specify his preferred, acceptable or unacceptable seed origins. Researchers, who may wish to investigate seed origin variation in greater detail, are led into the extensive literature which supports this necessarily condensed publication.