There are two main vegetation zones in the sanctuary: the montane forest, with trees like: intimpa ("Podocarpus glomeratus"), unka ("Myrcianthes oreophila"), ch’uyllur ("Vallea stipularis"), chachacomo ("Escallonia resinosa"), tasta ("Escallonia myrtilloides"), huamanq’ero ("Styloceras laurifolium"), wankartipa ("Randia boliviana") and capuli-pishay ("Prunus rigida"), along with associated shrubs and herbs; and the high altitude grasslands, with herb species of the genera: "Jarava", "Festuca", "Calamagrostis", "Werneria", "Valeriana", "Azorella", among others. There is a transitional zone above 3700 m between these two main vegetation zones and is dominated by: tasta ("Escallonia myrtilloides"), masuka ("Brachyotum" sp.). and chawchapay ("Saracha punctata").