Nodding Onion (Allium cernuum)
[AL-ee-um SIR-new-um]

Deciduous Perennial Upright, Clump-forming in the Amaryllidaceae Family
 
Buy Nodding Onion
Size Notes Price Availability
#1 gallon Field $14.37 Likely available
11/1 - 11/8
1/24 - 4/4
38 FLAT Field $86.58 Likely available
11/1 - 11/8
1/24 - 4/4
50 plug flat Field

Grower approved but probably not garden center ready. (9/13)

 $174.38 Likely available
11/1 - 11/8
1/24 - 4/4
Tray of 10 4" pots Field $62.78 Likely available
11/1 - 11/8
1/24 - 4/4

Grass-like foliage with elegant nodding flower heads. Early summer pinkish-purple flowers attract bees and parasitic wasps. Can be used in cultivated beds in masses.
Allium cernuum is a native North American wildflower found from Alabama and Georgia north to New York and west to Washington and Arizona, most commonly in open woodlands, rocky glades, and prairie remnants. Unlike its cultivated onion relatives, this species is grown primarily for its ornamental umbels of nodding, bell-shaped pink to lavender flowers held above grass-like, onion-scented foliage. The genus name Allium is the classical Latin word for garlic; cernuum means "nodding" or "drooping," referring to the distinctive downward-curving flower stalk that sets this species apart from most other onions, whose flower heads face upward.

Pros

  • Attracts bees, butterflies, and other pollinators over a long summer bloom period
  • Genuinely native to Illinois and much of eastern North America
  • Deer and rabbit resistant, with no serious pest or disease problems
  • Tolerates a wide range of soils, from clay to sand, once established

Cons

  • Foliage can look ragged and die back before flowering finishes
  • Self-seeds readily and can naturalize beyond where it was planted
  • Like all alliums, potentially toxic to cats, dogs, and other pets if eaten
Why Like A true Illinois native that asks for very little once established, Nodding Onion offers a long season of interest: grassy, onion-scented foliage in spring, followed by fragrant, bell-shaped pink flower clusters that nod gracefully atop wiry stems in mid-to-late summer, when many other native flowers have already finished. It is a reliable draw for bees, butterflies, and other pollinators, and its drought tolerance and adaptability to poor or rocky soil make it an easy, low-maintenance addition to a native plant or pollinator garden.
 

Plant Data

Mature Size 12 - 18 inches tall. 8 - 12 inches wide.
Growth Rate Moderate
Sun Exposure Partial Shade - Full Sun
Moisture Tolerance Dry - Medium: Drought tolerant once established; prefers dry to medium moisture and dislikes standing water.
Zones 4a - 8b (Usually hardy to -30° F)
Tags Attracts Butterflies, Attracts Pollinators, Attracts Wildlife, Bulbs for Fall Planting, Container, Deciduous, Deer Resistant, Disease Resistant, Drought Tolerant, Dry, Extended Bloom Time, Fragrant Flowers, Fragrant Foliage, Full Sun, Good for Borders, Good for Butterfly Garden, Good for Cottage Garden, Good for Cut Flowers, Good for Mass Planting, Illinois Native, Low Maintenance, Medium, Most Popular, Native to North America, Naturalizing, Non-Allergenic, Normal Soil, Ornamental, Partial Shade, Partial Sun, Perennial, Potentially Toxic, Rabbit Resistant, Showy Flowers, Tolerant of Clay Soil, Tolerant of Loamy Soil, Tolerant of Poor Soil, Tolerant of Sandy Soil, Well-Drained Soil, Woodland Garden
Bloom Period June to August
Flower Color Pink
Foliage Color Green
 

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Pricing and Availability History

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Past Availability
2025 : 04/03 - 10/04
2024 : 05/01 - 10/05
2023 : 04/13 - 09/30

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Field-Grown vs. Greenhouse-Grown Plants

Plants which are well-adapted to our local climate are most often field-grown (outside). Field-grown plants are generally cheaper and have the advantage of already somewhat acclimated to our cold winters, but that means they’re not artificially far along in the spring and tend to bloom at the normal time in our area.

Spring annuals and tender perennials are typically grown in Greenhouses so they can be ready and luxurious exactly when customers want them. Some perennials are also “forced” into early bloom in greenhouses. In May, there can be a very big difference between field-grown and greenhouse-grown plants of the same type. The latter typically look good right away (so they’re a great choice where that’s important), but we typically pay a premium for it.


Estimated Recipe Cost

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No Pricing or Availability Right Now

We order from a rotating cast of the best nurseries in the Great Lakes region. It looks like we've offered this plant in the past, but the nurseries we're working with this week don't appear to have it in stock at the moment.

Our goal is to bring as many plants together under "one roof" as possible, so we'll try hard to make it available again in the future!