Spring tree fluxes are an ephemeral but ratherwidespread substrate which can be easily recognizedand sampled by amateurs in a Citizen Science project.A good example of such Citizen Science initiative hasbeen reported in a recent study of yeasts from Dutchsoils (Groenewald et al. 2018). We believe that newstudies and isolates of psychrophilic and psychrotolerantyeasts from temperate climates would improveour understanding of yeast adaptation to the changingenvironment.