Nodding Onion Characteristics
Nodding Onions are particularly hardy in the Pittsburgh climate and can be frequently found throughout landscapes. The grass-like leaves have a strong onion aroma, particularly when damaged. Foliage persists into late summer with blooms lasting from June to August. Nodding Onion are self seeding and will spread on their own if not cut back. The pink, purple or white flowers give way to black seeds as the blooming season comes to an end.
Nodding Onion is self seeding and will propagate on its own. These plants should be divided every third year or when 10 or more bulbs appear close together. To prevent propagation, deadhead the blooms before the black seeds appear. Nodding Onion is very easy to care for with no serious pests or diseases.
These plants can be make a great addition to rock gardens, along borders, or in naturalized areas with wild flowers or meadows. They can bring height to locations with groundcovers as they are usually hardy enough to not be choked out, but are not invasive themselves.