An Essential book for the library of any heritage rose lover. The individual facts for each cultivar are not as in-depth as some other more narrowly focused references, however the sheer volume of roses covered is astounding. Mr. Beales also DOES include gathered knowledge for each cultivar, such as if it is disease-prone or suffered a loss of vigour, etc. Much growing information is condensed by the use of symbols after each description, such as sets hips, tolerates poorer soils, suitable for hedging, etc.