The mountain is covered by old-growth forest. Typical species include Japanese beech and Tsuga. Going up from the lowland, the vegetation changes from evergreen (glossy-leaved) forest over conifer forest halfway up the mountain, to Suzu-take and beech close to the summit. Angelica ubatakensis is only found on parts of Shikoku and in the Sobo mountain range is a precious plant. The pseudonym of Mount Sobo, (uba meaning elderly woman in Japanese), goes back to the discoverer of the plant, Tomitaro Makino, who called it that.