Royal Horticultural Society Encyclopedia of Conifers (1-2)

A two-volume encyclopedia covering 8,000 cultivars and all 615 conifer species, more than any other illustrated book.
As well as the extensively researched cultivar descriptions, this comprehensive guide includes descriptions of all accepted genera, species, subspecies and varieties.
The cultivar accounts are particularly useful as size in ten years is given for the majority and the descriptions, origins and dates have been checked against the RHS International Cultivar Register.
More than 500 species and 5,000 cultivars are depicted in high quality photographs, many taken in private collections in northern Europe, Japan and the USA.