Shirui peak rises to 2,835 metres in the hills east of Ukhrul town and is the only place on earth where the Shirui lily (Lilium mackliniae) blooms wild. The lily is Manipur's state flower and appears on the highest slopes between May and June, when the hillside turns pink and white with its drooping bells. The Shirui Lily Festival in May draws visitors from across the state for this brief window.
The hike to the summit takes three to four hours from the trailhead, following a trail through rhododendron and oak forest before opening onto the high meadows where the lily grows. Views from the top extend across the Naga Hills into Myanmar on clear days. A permit is required and a local guide is strongly recommended — the trail can be unclear in places and the permits are arranged through the district tourist office in Ukhrul town.