The novelty and topicality of the Promotional Paper lies in the fact that there was no detailed research undertaken in Latvia before concerning a separate part of special lexis in general dictionaries. The topicality of the research is also supported by the bilingual dictionaries selected and analysed, as they are less studied than monolingual ones. This is the first study on plant names taken as a special vocabulary of a general bilingual dictionary, in which a wide range of plant names is excerpted from six medium-sized bilingual dictionaries and analysed. The study provides suggestions on how to improve plant names' selection and lexicographical processing based on the facts provided by the case study conducted in the form of selecting plant names. The aim of the Promotional Paper is to analyse the principles of selecting and lexicographic processing of special lexis, as well as to create an opportunity to compile an optimum selection of lexis representing one field for the general bilingual dictionaries by taking as a basic research material one of the large parts of the special lexis - plant names. The object of the research is special lexis of medium-sized general bilingual dictionaries, and the subject of the research are plant names in medium-sized general English-Latvian, Russian-Latvian, and German-Latvian dictionaries. In the process of writing the Promotional Paper the basic list of plant names was compiled (optimum selection of plants) for a medium-sized general dictionary; the description of the process of compiling the basic list can serve as a model for compiling other similar lists, for instance, of animal names.