Orchids are a family of plants that are characterized by their complexity, the beauty of their flowers, their ecological interactions with fungi and pollinators, their adaptability in different environments and their wide diversity. There are more than 25,000 species reported worldwide, and Colombia is one of the countries with the largest number of orchid species: it is considered that there are 4,400 species grouped into 274 genera. The increase in the legal and illegal commercial demand for orchids as ornamental products has resulted in a greater interest in the development of mass propagation methods not only for their commercialization, but also for their conservation. For this reason, it is of interest to identify the types of substrates used in Orchids are a family of plants that are characterized by their complexity, the beauty of their flowers, their ecological interactions with fungi and pollinators, their adaptability in different environments and their wide diversity. There are more than 25,000 species reported worldwide, and Colombia is one of the countries with the largest number of orchid species: it is considered that there are 4,400 species grouped into 274 genera. The increase in the legal and illegal commercial demand for orchids as ornamental products has resulted in a greater interest in the development of mass propagation methods not only for their commercialization, but also for their conservation. For this reason, it is of interest to identify the types of substrates used in [ABSTRACT FROM AUTHOR]