Komagatake, as well as Ōnuma and Konuma, are protected as part of Ōnuma Quasi-National Park (), which covers much of eastern Mori. The park is home to alpine plant species such as "iwabukuro", a flowering plant of the family Scrophulariaceae, and "urajirotade", a flowering plant of the family Polygonaceae. The middle reaches of Komagatake is home to stands of broadleaf trees, including "mineyanagi", a species of willow, "doronoki", a Populus species, birches, and "mizunara", a species of oak. Ōnuma is home to watershields, carp, and wakasagi, a species of smelt used in Japanese cuisine.