Create Your Garden

Allium stellatum (Prairie Onion)

Autumn Onion, Prairie Onion

Allium stellatum, Autumn Onion, Prairie Onion, Ornamental Allium, Pink flowers, Summer Pink Flowers
Allium stellatum, Autumn Onion, Prairie Onion, Ornamental Allium, Pink flowers, Summer Pink Flowers
Allium stellatum, Autumn Onion, Prairie Onion, Ornamental Allium, Pink flowers, Summer Pink Flowers
Allium stellatum, Autumn Onion, Prairie Onion, Ornamental Allium, Pink flowers, Summer Pink Flowers

Allium stellatum (Prairie Onion) is a bulbous perennial forming a very compact clump of flat, slender, grass-like green leaves, 12 in. long (30 cm). From mid-summer to early fall, profuse, rounded umbels, 3-4 in. across (7-10 cm), tightly packed with rose-pink to lavender flowers are borne atop leafless stems just above the foliage. Emerging in spring, the foliage usually dies back by the time of flowering. All parts of this plant exude an onion fragrance when cut or bruised. The bulbs have a strong flavor and can be eaten raw or parboiled. Early explorers ate them, but also used them to treat colds, coughs, and asthma, or to repel insects. Tolerant to hot and dry conditions, this North American native is suitable for rock gardens.

  • Grows up to 12-18 in. tall (30-45 cm) and 6-12 in. wide (15-30 cm). This Allium will spread by self-seeding and bulb offsets.
  • Performs best in sandy or rocky, dry to medium, well-drained soils in full sun to light shade. Best in full sun, but appreciates some afternoon shade in hot summer climates. Drought and dry soil tolerant.
  • Lovely in beds and borders, cottage gardens, rock gardens, or prairies and meadows. To achieve an impressive visual effect, plant in clusters.
  • Generally pest and disease free.
  • Known for attracting bees, butterflies, and other pollinators, but deer ignore it.
  • Deadhead spent flowers before seed set to help control any undesired self-seeding.
  • Easily grown from seed (in spring) or from bulbs/bulb offsets (in fall).
  • Allium stellatum is native to central Canada and the central United States.

Requirements

Hardiness 3 - 8
Plant Type Bulbs
Plant Family Amaryllidaceae
Genus Allium
Common names Onion
Exposure Full Sun, Partial Sun
Season of Interest Summer (Mid, Late)
Fall
Height 1' - 2'
(30cm - 60cm)
Spread 6" - 1'
(15cm - 30cm)
Spacing 6" - 12"
(15cm - 30cm)
Maintenance Low
Water Needs Low, Average
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Fragrant, Showy
Native Plants United States, Southwest, Southeast, Midwest, Wisconsin, Iowa, Kansas, Indiana, Illinois, Michigan, South Dakota, Minnesota, Missouri, North Dakota, Tennessee, Arkansas, North Carolina, Texas, Oklahoma, Wyoming
Tolerance Drought, Deer, Dry Soil, Rocky Soil
Attracts Bees, Butterflies
Garden Uses Beds And Borders
Garden Styles Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Allium
Guides with
Allium
Not sure which Allium to pick?
Compare Now

Alternative Plants to Consider

Allium cepa Aggregatum Group (Shallot)
Allium cepa (Onion)
Allium sativum (Garlic)
Allium ‘Pinball Wizard’ (Ornamental Onion)
Allium ‘Purple Rain’ (Ornamental Onion)
Allium ‘Ostara’ (Ornamental Allium)

Recommended Companion Plants

Salvia sclarea var. turkestanica (Clary Sage)
Lilium ‘Anastasia’ (Orienpet Lily)
Liatris spicata ‘Floristan Weiss’ (Blazing Star)
Cotinus coggygria ‘Royal Purple’ (Smokebush)
Perovskia atriplicifolia (Russian Sage)
Kniphofia (Red Hot Poker)

Find In One of Our Guides or Gardens

Pure White Flowers for a Touch of Elegance in Your Garden
26 Terrific Summer Bulbs to Grow in your Garden or Pots
30 Best Spring Flowers to Spruce up Your Garden
How to Create an Enchanting Butterfly Garden
For the Love of Butterflies: Best Flowers to Attract them to Your Garden
6 Reasons You Should Create a Butterfly Garden
For the Love of Bees: Best Flowers to Attract them to Your Garden
How to Cultivate a Thriving Bee-Friendly Garden
Popular Flower Bulbs For Your Garden and Pots
18 Best Plants That Repel Mosquitoes
Learn How To Plant, Grow and Harvest Chives
Brighten Up Your Garden From January Through May with Colorful Flower Bulbs
Wonderful Plants That Repel Insects
Allium (Ornamental Onion)
Great Rose Companion Plants: Allium
Bulbs that return to the garden year after year!
Tall Alliums for your Garden Borders
Small Allium Species for the Rock Garden
Learn How To Plant And Care for Your Spring Flower Bulbs
Great Bulbs and Perennials as Companion Plants for Azaleas and Rhododendrons
Plants with Purple Flowers to Add Charm to Your Garden
Awesome Allium Combos
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
Buy Plants

Requirements

Hardiness 3 - 8
Plant Type Bulbs
Plant Family Amaryllidaceae
Genus Allium
Common names Onion
Exposure Full Sun, Partial Sun
Season of Interest Summer (Mid, Late)
Fall
Height 1' - 2'
(30cm - 60cm)
Spread 6" - 1'
(15cm - 30cm)
Spacing 6" - 12"
(15cm - 30cm)
Maintenance Low
Water Needs Low, Average
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Fragrant, Showy
Native Plants United States, Southwest, Southeast, Midwest, Wisconsin, Iowa, Kansas, Indiana, Illinois, Michigan, South Dakota, Minnesota, Missouri, North Dakota, Tennessee, Arkansas, North Carolina, Texas, Oklahoma, Wyoming
Tolerance Drought, Deer, Dry Soil, Rocky Soil
Attracts Bees, Butterflies
Garden Uses Beds And Borders
Garden Styles Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Allium
Guides with
Allium
Not sure which Allium to pick?
Compare Now

Gardening Ideas

Plant Calculator

How many Allium stellatum (Prairie Onion) do I need for my garden?

Input your garden space dimensions

Your Shopping List

Plant Quantity
Allium stellatum (Prairie Onion) N/A Buy Plants

Please Login to Proceed

You Have Reached The Free Limit, Please Subscribe to Proceed

Subscribe to Gardenia

To create additional collections, you must be a paid member of Gardenia
  • Add as many plants as you wish
  • Create and save up to 25 garden collections
Become a Member

Plant Added Successfully

You have Reached Your Limit

To add more plants, you must be a paid member of our site Become a Member

Update Your Credit
Card Information

Cancel

Create a New Collection

Sign Up to Our Newsletter

    You have been subscribed successfully

    Join Gardenia.net

    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

    Join now and start creating your dream garden!

    Join Gardenia.net

    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

    Join now and start creating your dream garden!

    Find your Hardiness Zone

    Find your Heat Zone

    Find your Climate Zone