Huascaran National Park is home to exhuberant flora. Some of the species are truly unique such as the Puya Raimondi. A relative to the pineapple, this 12m-high plant blooms to produce 20,000 flowers and disperses approximately seven million seeds during its 100-year lifespan.
The distribution of the plant population is a function of elevation and sun exposure. The northern and central areas of the HNP are richer in species, whereas the southern area offers less variety. The maximum elevation at which plant life can exist is 4,800 m .(15,744 ft.), since certain native plants can thrive at this altitude. In terms of numbers of species, depths of the valleys are richer than other areas in the park, although some species such as weqlla or machitu can be found on steep walls. During the first scientific flora studies at the HNP, 104 families, 340 genus and 799 species were identified. Four groups can be distinguished within the HNP: low altitude plants such as tsampa, qachqa , etc.; high altitude plants among which ichu or ocsha are predominant; thicket mainly including chachacoma , tsacpä , qontsi casha, etc; and mixed forests including japru, quenual, auishuar, pupa, purush , etc. These are indigenous plant names.