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

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

Category:

Bulbs

Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us

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

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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Gardeners' Notes:

1
positive
1
neutral
1
negative
RatingContent
Positive

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

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

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.