Urban trees reforestation grounded in characteristics of plantation sites is necessary to tree maintenance and health care. Decisions concerning when, where and which tree species to plant have important consequences for tree survival and resilience. Through the application of Multiple Correspondence Analysis and Clustering of qualitative criteria, it was possible to establish nine clusters based on the qualitative modalities of planation sites and so to associate them with urban tree species. The use of indexes related to the percentage of modalities with respect to the sample, specificity and homogeneity of clusters resulted useful criteria to describe plantation sites. We study the case of urban trees in Mexico City.