The main activity of the project presented at this conference is the development of a map of hazelnut cultivation in Catalonia with GIS support. For this, it has the collaboration and support of the DUN data, the ICGC, the ACA and the SMC. For two years, we have been working together with IRTA and Corylus tecnicae technicians, to be able to offer these plans, which highlight the most suitable areas for hazelnut cultivation, bearing in mind the characteristics of the soil, the water supplies ( underground and surface) and temperature and precipitation data. We will also present some descriptive sheets of the main hazelnut varieties grown in Catalonia, describing the characteristics of the tree, the fruit, the phenology, the agronomic aspects of the crop and some plans indicating the most suitable areas for growing each of these varieties. . This conference is part of the demonstration activity "Preparation of a map of varieties and soils for hazelnut cultivation in Catalonia" (2020-2022)", operation 01.02.01 (technology transfer) of the PDR of Catalonia 2014-2020.