From 500 to 1,800 meters is the temperate zone, with coniferous and broad-leafed trees such as fir, juniper and maple, while the area above 1,800 meters is known for its lush growth of coniferous trees, including cypress and juniper, whose wood is commercially valuable.
太平山在海拔二百到五百公尺間，是闊葉亞熱帶林，包括台灣樹橛、筆筒樹、樟樹、鴨腳木和楓樹等。海拔五百到一千八百公尺間是暖溫帶林，針葉樹和闊葉樹並陳，以杉木、柳杉、紅檜及台灣赤楊、烏心石、楓樹最多。海拔一千八百公尺以上，則是盛產台灣扁柏和紅檜的混合林。