Photo by Melody

PlantFiles: Giant Onion, Giant Allium
Allium 'Globemaster'

Family: Alliaceae
Genus: Allium (AL-ee-um) (Info)
Cultivar: Globemaster

6 vendors have this plant for sale.

56 members have or want this plant for trade.

View this plant in a garden


36-48 in. (90-120 cm)

12-15 in. (30-38 cm)

USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun


Bloom Color:

Bloom Time:
Late Spring/Early Summer
Mid Summer


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

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:
Unknown - Tell us

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Click thumbnail
to view:

By mystic
Thumbnail #1 of Allium  by mystic

By mystic
Thumbnail #2 of Allium  by mystic

By debi_z
Thumbnail #3 of Allium  by debi_z

By Melissa_Ohio
Thumbnail #4 of Allium  by Melissa_Ohio

By Melissa_Ohio
Thumbnail #5 of Allium  by Melissa_Ohio

Thumbnail #6 of Allium  by JanFRN

By lorettamar
Thumbnail #7 of Allium  by lorettamar

There are a total of 22 photos.
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5 positives
1 neutral
1 negative

Gardeners' Notes:

Positive CyndeeT On Apr 30, 2012, CyndeeT from Maple Hill, NY (Zone 6b) wrote:

I will say this they are Magnificent in Upstate New York !
I do get many compliments on them (I did share, see photo) for the Gardener having the issue with them;
if she would have Beheaded the GLOBE
Before letting it go to seed
this would have NEVER been an issue.
I behead all my flowers to keep them blooming healthy
for years to come.

Negative gardengirl86 On Feb 20, 2012, gardengirl86 from Middleboro, MA wrote:

Many years ago I planted Giant Allium, and I have been cursing them ever since. They quickly took over my garden, and after about 30 years I am still trying to get rid of them. They quickly lost their giant size and reverted back to small onion-like plants that keep popping up everywhere. How about an article on how to keep them under control.
Their bulbs seem to grow like little strings of pearls and when you think you have the entire thing, the string breaks and you just know that there is still a piece of it in the ground. Will never grow them again. But that doesn't matter because I know I will never get rid of them anyway.

Positive runnerboy713 On May 17, 2010, runnerboy713 from Westborough, MA (Zone 5b) wrote:

A nice spring bulb. It provides some nice color after the daffodils have passed but before other perennials are beginning to bloom. The honey bees appreciate them too. They have a pleasant fragrance at close range. As another poster mentioned, hide them in the middle or back of a border because the foliage is unattractive and starts to brown, even as the flower is opening and in full bloom.

Positive carpathiangirl On Jun 29, 2009, carpathiangirl from Akron, OH (Zone 5a) wrote:

Easy-to-grow, undemanding and interesting plant here in my 5a zone.

Neutral hk1972 On Apr 3, 2009, hk1972 from Henderson, NV wrote:

Globemasters do not grow in the hot, dry, desert region here. Those catalog companies will say anything to get you to buy! I am in zone 9a and have had no luck with these. Other alliums have done well. The most this can grow is about 6 leaves in mid-spring, a stick and bud comes out, then it gets too hot to bloom as the globemasters are known for their large spheres. I have never seen this grown successfully anywhere here in Henderson or Las Vegas, NV. But have seen it do very well in Southern California.

Positive lakeshoredrive On Jan 4, 2009, lakeshoredrive from Chicago, IL wrote:

The Globemaster is just beautiful. Like a giant lollipop, not picky about soil, even tolerating salt.

Positive lorettamar On Sep 25, 2006, lorettamar from Southold, NY (Zone 7a) wrote:

These tall flowers don't have to be staked, but the leaves are unattractive. Be sure to plant them among other plants that have plenty of nice foliage.


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

, (2 reports)
Sterling, Alaska
Garberville, California
Sacramento, California
Denver, Colorado
Old Lyme, Connecticut
Stamford, Connecticut
Cordele, Georgia
Dallas, Georgia
Chicago, Illinois
Decatur, Illinois
Metamora, Illinois
Mount Prospect, Illinois
Britt, Iowa
Olathe, Kansas
Shawnee Mission, Kansas
Barbourville, Kentucky
Ewing, Kentucky
Taylorsville, Kentucky
Adamstown, Maryland
Baltimore, Maryland
Edgewater, Maryland
Brimfield, Massachusetts
Springfield, Massachusetts
Westborough, Massachusetts
Winchester, Massachusetts
Dearborn Heights, Michigan
Highland Park, Michigan
Forest Lake, Minnesota
Florence, Mississippi
Saint Louis, Missouri
Ponca, Nebraska
Lisbon, New Hampshire
Neptune, New Jersey
Melrose, New Mexico
Albany, New York
Chester, New York
Kingston, New York
Pennellville, New York
Southold, New York
Elizabeth City, North Carolina
Akron, Ohio
Dayton, Ohio
Felicity, Ohio
Oak Hill, Ohio
Bellefonte, Pennsylvania
Norristown, Pennsylvania
State College, Pennsylvania
Wilkes Barre, Pennsylvania
Conway, South Carolina
Houston, Texas
Santa Fe, Texas
Salt Lake City, Utah
Tremonton, Utah
Newport News, Virginia
Kalama, Washington
Kent, Washington
Sequim, Washington

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