Allium rosenbachianum, commonly known as Showy Persian Onion, is a deciduous perennial bulb, native to the rocky slopes and open fields of Central Asia, particularly in regions like Uzbekistan and Tajikistan. It typically grows to a height of 1-3 feet (0.3-0.9 meters) and a width of 0.5-1 feet (0.2-0.3 meters). This plant is noted for its striking spherical flower heads that bloom in late spring to early summer, featuring star-shaped purple and white flowers that are highly attractive to pollinators.

The Showy Persian Onion is valued for its ornamental flowers, which make a dramatic statement in borders, rock gardens, and as cut flowers in floral arrangements. It is also used in naturalized plantings and pollinator gardens. This allium prefers full sun to part shade and requires well-drained soil to thrive. It is relatively low maintenance, only needing occasional watering once established. While generally pest-free, it can be susceptible to onion fly and thrips. It is not known to be invasive and does not have aggressive roots, making it a safe choice for most garden settings.CC BY-SA 4.0