It is a bulbous plant, with a 3–7 cm diameter bulb. The leaves are strap-shaped, 15–35 cm long and 1–3 cm broad, with a soft, succulent texture, and produced in a basal whorl. The flowering stem is a raceme, which grows to 20–35 cm (rarely to 45 cm) tall, bearing 2–50 fragrant purple flowers 2–3.5 cm long with a tubular, six-lobed perianth.