Mount Pulag has a large diversity of flora and fauna, including many species that endemic to the mountain. Mount Pulag hosts 528 documented plant species. It is the natural habitat of the dwarf bamboo (Yushania niitakayamensis) and the Benguet pine (Pinus kesiya) that dominate the areas of Luzon tropical pine forests found on the mountainsides. The Philippine yew tree, which contains a compound associated with cancer treatment, is found on Mount Pulag. Its bark is used by indigenous Ibaloi and Kalanguya communities to make tea.