This study investigated the breeding status and agronomic characteristics of Pleurotus eryngii based on academic literature and cultivars registered with the Korean Seed and Variety Services. P. eryngii was first introduced to Korea in 1995, which led to the distribution of 'Keunneutari 1-ho' and 'Keunneutari 2-ho' through initial selection breeding by the Gyeongnam Agricultural Research and Extension Services and the Rural Development Administration (RDA). Subsequently, 20 P. eryngii cultivars and 2 interspecific hybrid cultivars were developed and registered through crossbreeding or genetic engineering techniques. The registered cultivars, from the earliest 'Saesongi 1-ho' to the latest 'Daol' (RDA), exhibit improved traits such as high yield, high quality, early maturity, low pin deformity, extended shelf life, superior cap morphology, and high functionality, which were developed to meet evolving agricultural and commercial demands. Detailed agronomic characteristics are vital for commercial cultivation and for defining parental lines in future breeding programs, highlighting their importance as fundamental breeding information.