Nirnroot is a glowing, luminescent plant with a distinctive blue or green hue, depending on its variant. It features a slender, curved stem that supports a cluster of small, bell-shaped flowers at the top. The leaves are narrow and slightly serrated, with a subtle glow that pulses gently. The root system is intricate, often visible above ground, adding to its mystical appearance. The surface of the plant is smooth with a slightly waxy texture, and the glow emits a soft, ethereal light that can be seen even in daylight.