ornamental onion

Allium atropurpureum (ornamental onion) is a perennial bulb whose specific epithet, “atropurpureum” is Latin for deep purple.

This refers to the color of its hemispheric flower. After blooming, this plant’s long-lasting and unique seed head contnues to add interest to the garden well into the summer months.  

Botanical Name Allium atropurpureum
Common Name ornamental onion
Family Amaryllidaceae
USDA Zone 3 thru 8
Light Requirement Full Sun
Season(s) of interest all seasons
Height and Spread 1.5-2.5ft x 0.5ft (45-75cm x 15cm)
Flower Color Purple
Attracts Wildlife Attracts Pollinators, Rarely Browsed by Mammalian Herbivores
Additional Information Not Native to the US Midwest. Native to Asia Minor from Hungary to Turkey
Location in Lurie Garden Northeast Light Plate, Northwest Light Plate, Southwest Light Plate, Southeast Light Plate

Average Flowering Time