One-leaf Onion (Allium unifolium)

Common names:
Give a thumbs up Oneleaf Onion
Give a thumbs up One-leaf Onion
Give a thumbs up One-Leaved Onion
Give a thumbs up American Onion

Botanical names:
Allium unifolium Accepted
Allium grandisceptrum Synonym

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Water Preferences: Mesic
Dry Mesic
Dry
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Plant Height: 12 to 18 inches (30-45 cm)
Leaves: Spring ephemeral
Flowers: Showy
Flower Color: Pink
White
Flower Time: Spring
Late spring or early summer
Foliage Mound Height: 7 to 12 inches
Underground structures: Rhizome
Bulb
Dynamic Accumulator: K (Potassium)
Ca (Calcium)
Na (Sodium)
Pollinators: Bees
Various insects
Awards and Recognitions: RHS AGM

Image

Photo gallery:
Location: My garden, Gent, BelgiumDate: 2014-05-17
By bonitin
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Location: Potomac MDDate: 2019-04-27
By sulurph
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Location: My garden, Gent, BelgiumDate: 2014-05-22
By bonitin
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Location: My Northeastern Indiana Gardens - Zone 5bDate: 2012-05-07
By chelle
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Location: My Northeastern Indiana Gardens - Zone 5bDate: 2012-05-23Photo taken in early morning light
By chelle
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Location: My Northeastern Indiana Gardens - Zone 5bDate: 2012-05-23
By chelle
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Location: My Northeastern Indiana Gardens - Zone 5bDate: 2012-05-23
By chelle
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Location: My Northeastern Indiana Gardens - Zone 5bDate: 2012-05-09In the garden
By chelle
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Discussion Threads about this plant
Thread Title Last Reply Replies
Mis-ID, not even close to Allium unifolium. by AntMan01 Apr 2, 2018 11:24 PM 6
Mis-ID by AntMan01 Apr 2, 2018 11:22 PM 0
Need suggestions by ge1836 Apr 11, 2018 9:02 AM 5
Show Us your Spring 2012 Cottage Garden and Chat (#2) by sandnsea2 May 8, 2012 6:53 PM 293
Show Us Your Cottage Garden & Chat (November 2011) by sandnsea2 Dec 1, 2011 4:12 AM 305

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