Allium wallichii, commonly known as Himalayan Onion, is a perennial herbaceous bulb native to alpine slopes and meadows in the Himalayas and parts of South and Southeast Asia. It typically grows to a height of 12-24 inches (30-60 cm) and forms clumps of narrow, elongated bulbs. The plant features strap-shaped leaves and a tall stem that bears an umbel of star-shaped flowers, which can range in color from white to pink, red, and dark purple, sometimes appearing almost black. The flowering season occurs from late spring to early summer, and the flowers are known for their showiness and attractiveness to pollinators.

The Himalayan Onion is valued for its ornamental flowers and is used in rock gardens, borders, and as a naturalizing plant in informal garden areas. It thrives in full sun but can tolerate part shade, and while it prefers medium amounts of water, it is also drought-tolerant once established. Well-drained soil is essential to prevent bulb rot. This species is not commonly afflicted by diseases but can be susceptible to onion white rot and bulb mites. It is important to note that Allium wallichii should not be planted near legumes, as it can inhibit their growth.CC BY-SA 4.0