The datasets comprise data from a flowering phenology monitoring of snowbed species (Salix herbacea, Poa alpina, Gnaphalium supinum, Euphrasia minima, and Veronica alpina) in Matschertal (Northern Italian Alps) and Cimalegna (Western Italian Alps), spanning the period from 2018 to 2020. It includes datasets containing soil temperature measurements and data from phenological surveys conducted during the vegetative seasons over the period, as well as vegetative indices from phenocams installed at both sites in 2020. An adapted BBCH scale was utilized for monitoring the phenology of the species.