Nodding onion Allium cernuum Photo/Illustration: Mark McDonough Nodding onion (Allium cernuum) Genus: Allium This plant produces open clusters of pinkish purple, droplet-shaped flowers along drooping, arching 2-foot-tall stems. Its foliage is bluish green. Noteworthy Characteristics: The most remarkable feature of the nodding onion is its adaptability. It will grow in almost any situation, from full sun to deep shade. Care: Best grown in full sun and dry to medium, well-drained soil. Tolerates shade as well, especially in hot climates. Propagation: Sow seed in spring in containers or in situ. Divide clump-forming plants in spring. Problems: Bulb rot in damp conditions. Onion fly and thrips. Overview Height 1 ft. to 3 ft. Light Full Sun to Part Shade Characteristics Attracts Butterflies, Attracts Hummingbirds, Native Bloom Time Summer Flower Color Pink, Purple Uses Beds and Borders Style Rock Garden Seasonal Interest Summer Interest Tolerance Deer Tolerant Type Perennials Allium cernuumView the discussion thread.