The tree line on Haba Snow Mountain occurs around 4,000 meters. It might be a bit higher or lower, depending on local conditions. The upper forests harbor varieties of rhododendron and other flowering trees. When they burst into bloom in May and June, they present a delightful panorama of colors—white, red and yellow. Evergreen and deciduous trees make up the lower forests, with a smattering of flowering trees that bloom earlier.
The leaves of the Yehuajiaoshu tree (野花椒树, Wild Flowering Pepper Tree) turn red in the first half of October. They contrast dramatically with the dark waters of Black Lake (黑海). Several of these trees dot the shoreline.