Many important species of plants, such as Himokazura (Selaginella shakotanensis) of Selaginellaceae, in addition to Okishireika (Patrinia takeuchiana Makino) of the Valerian family, which grows naturally only in this mountain, exist on the hill side.
山腹には青葉山にだけ自生するオミナエシ科の多年草「オオキンレイカ」のほか、イワヒバ科のヒモカズラなど、きわめて重要な種が多く分布している。