The 5th volume of Rothmaler enables the identification of herbaceous ornamental and useful plants cultivated outdoors in Germany, including rarer species. For approximately 3,500 species, it provides correct scientific names, often important synonyms, information on flowering months, growth height, growth form, and frequency in the area. It also includes notes on their use in horticulture and agriculture, cultural guidelines for propagation, cultivation, site requirements, or wintering, native ranges and locations in the area of origin, the time and history of domestication, as well as important varieties with their characteristics. Numerous illustrations depict key identification features as well as the appearance of entire plants. The book is aimed at gardeners, professionals, and students of horticultural and agricultural sciences, as well as garden enthusiasts, botanists, and nature lovers.