Photo by Melody

PlantFiles: Three-cornered Garlic, Three-cornered Leek, Stinking Onions, Onion Weed
Allium triquetrum

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Family: Alliaceae
Genus: Allium (AL-ee-um) (Info)
Species: triquetrum (try-KWET-rum) (Info)

3 vendors have this plant for sale.

6 members have or want this plant for trade.

Category:
Bulbs
Perennials

Height:
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)

Spacing:
Unknown - Tell us

Hardiness:
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Light Shade
Partial to Full Shade

Danger:
N/A

Bloom Color:
White/Near White

Bloom Time:
Mid Spring

Foliage:
Aromatic

Other details:
May be a noxious weed or invasive

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall

Seed Collecting:
Unknown - Tell us

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By kennedyh
Thumbnail #1 of Allium triquetrum by kennedyh

By kennedyh
Thumbnail #2 of Allium triquetrum by kennedyh

By M_Bond
Thumbnail #3 of Allium triquetrum by M_Bond

By joeysplanting
Thumbnail #4 of Allium triquetrum by joeysplanting

By plantaholic186
Thumbnail #5 of Allium triquetrum by plantaholic186

By Zaragoza
Thumbnail #6 of Allium triquetrum by Zaragoza

By RosinaBloom
Thumbnail #7 of Allium triquetrum by RosinaBloom

There are a total of 9 photos.
Click here to view them all!

Profile:

1 positive
1 neutral
1 negative

Gardeners' Notes:

RatingAuthorContent
Positive mcrousse On Nov 17, 2009, mcrousse from Holly Springs, NC (Zone 7b) wrote:

This plant is hardy in my zone 7b so I am not sure how zone 10 came to be listed. At any rate, this is a beautiful little shade plant. It is a nice accent. The voles leave it alone, and it tolerates moist clay at the edge of my woods quite well. It has never been invasive for me; if anything I find I have to replace the plants every few years probably because of the clay. They are said to naturalize in good soil.

Negative Susan_C On Mar 9, 2008, Susan_C from Alameda, CA (Zone 9b) wrote:

A nasty weed in my garden. It is difficult to remove it all via hand pulling, and the tiniest bits left behind resprout. They can't be added to the compost pile, because composting won't kill them. (Learned that the hard way.) Weeding them out is an icky chore because they stink like the dickens. I will never be able to completely eradicate this plant, so have had to try to accept it and enjoy it when in bloom.

Neutral WillowWasp On Jun 6, 2006, WillowWasp from Jones Creek, TX (Zone 9a) wrote:

This plant is said to be Circa 1789, shade loving naturalizer with pendant creamy white bell shaped flowers with green veins.

Regional...

This plant has been said to grow in the following regions:

Alameda, California
Albany, California
Crescent City, California
Hayward, California
Redwood City, California
San Francisco, California
Winnetka, Illinois
Baton Rouge, Louisiana
Holly Springs, North Carolina



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