Photo by Melody

PlantFiles: Flowering Onion
Allium hollandicum 'Purple Sensation'

Family: Alliaceae
Genus: Allium (AL-ee-um) (Info)
Species: hollandicum (hol-LAN-dee-kum) (Info)
Cultivar: Purple Sensation

Synonym:Allium aflatunense

5 vendors have this plant for sale.

28 members have or want this plant for trade.

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24-36 in. (60-90 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:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:

Bloom Time:
Mid Spring


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
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:
Allow seedheads to dry on plants; remove and collect seeds

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7 positives
1 neutral
No negatives

Gardeners' Notes:

Positive coriaceous On Feb 20, 2014, coriaceous from ROSLINDALE, MA wrote:

Spherical masses of bright purple flowers on a straight stalk (not over 2' tall in my experience). Blooms in mid-May here in Boston Z6a. Blooms before A. christophii without overlapping. Leaves begin to go dormant during flowering.

These are more modest in scale than A. giganteum and the statuesque globe hybrids. They're also much cheaper and much more inclined to perennialize.

Their most important needs are full sun and good drainage. Not usually attractive to critters.

I've seen these increase a little, but not as much as I'd like. A fine border plant, this is one of the few alliums that can tolerate shading by other close-growing perennials. They should be planted in groups, and with abandon. (Don't worry, they're inexpensive.)

Neutral rozreads On Jul 4, 2012, rozreads from Wolcott, CO wrote:

grows at 9000' in Colorado mountains, although may die out with a very long, wet spring

Positive nutsaboutnature On May 22, 2011, nutsaboutnature from Algonquin, IL (Zone 5a) wrote:

I love Allium Purple Sensation!

I planted 10 last Autumn just to try them (they're already multiplying . . . 11 have come up). They are spectacular, opening one at a time, then they keep growing after they open, & now they're huge & still growing!

They're growing right in front of some Salvia Eveline that I planted last Spring (another experiment) & the combination of the Purple-Violet Alliums with the Light Pink Salvias is beautiful & eye-catching.

We have all sorts of wild critters in our area & though we thoroughly enjoy them, I normally have to resort to things like "Liquid Fence" on many of the plants. . .but none of the critters have any interest in the Alliums which is another bonus!

I will definitely be planting more of these gorgeous Alliums in Autumn.

I also find the Alliums still very interesting to look at even after the blooms are gone so I leave them standing in my garden.

Positive trflan On May 28, 2010, trflan from Fort Worth, TX wrote:

We put a cabin on 10 acres close to Whitney, TX. These odd plants that looked like stunted, pale corn stalks started coming up in areas that had been bulldozed and covered with rock. Last week they bloomed and are so pretty and unique. One stalk had to wrap under a split rail fence to bloom. We have deer, sandy soil, nothing gets watered and it gets very hot, so these guys are tough!

Positive Leehallfae On Jan 17, 2010, Leehallfae from Seattle, WA wrote:

Alliums are generally a reliable bloomer. On the plus side, they are not attractive to squirrels.

Purple Sensation are just as the name says. Plant them in bunches of 7 or 10 for a more visually pleasant spot in the yard: Yellow daffodils planted in front of the Purple Sensation is a most pleasing contrast.

Allium aflatunense is described as being lilac purple in hue. These would look splendid next to Blue Girl or Midnight Magic Blue Roses. Add some Blue (true blue) Hyacinths, then enjoy.

Positive bluespiral On Dec 1, 2006, bluespiral from (Zone 7a) wrote:

I like the way these purple spheres seem to float above the leaves of perennials under which they are planted - like visiting UFOs.

Positive TBGDN On Feb 28, 2006, TBGDN from (Zone 5a) wrote:

Very attractive mid to late spring bulbs. Dresses up a perennial bed while the main plants are waiting their turn to bloom. Very hardy here; easily grown.

Positive catcollins On Feb 25, 2006, catcollins from West Friendship, MD (Zone 6b) wrote:

This is a super easy, dramatic, stand out in the garden. It never needs staking, even with the strong Spring storms we get in central Maryland. The flowers last a really long time and help fill that awkward gap between the later spring bulbs and the perennials. I plant these 10 at a time, to be sure I have some to cut for bouquets. They do fine in a bit of shade and just flower a little later. I have some planted in damp soil and others in hard, rocky soil. No problems. Our deer and chipmunks leave these alone.


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

San Leandro, California
Aurora, Colorado
Wolcott, Colorado
New Milford, Connecticut
Buford, Georgia
Cumming, Georgia
Lawrenceville, Georgia
Algonquin, Illinois
Rock Falls, Illinois
Saint Charles, Illinois
Macy, Indiana
Petersburg, Indiana
Barbourville, Kentucky
Ewing, Kentucky
Hebron, Kentucky
Durham, Maine
Ellicott City, Maryland
West Friendship, Maryland
Peabody, Massachusetts
Roslindale, Massachusetts
Winchester, Massachusetts
Grant, Michigan
Mason, Michigan
Royal Oak, Michigan
Albertville, Minnesota
Florence, Mississippi
South Plainfield, New Jersey
Whitehouse Station, New Jersey
Los Alamos, New Mexico
Roswell, New Mexico
Clinton Corners, New York
Pittsford, New York
Cleveland, Ohio
Felicity, Ohio
Geneva, Ohio
Norristown, Pennsylvania
Wilkes Barre, Pennsylvania
Conway, South Carolina
Knoxville, Tennessee
Austin, Texas
Whitney, Texas
Castlewood, Virginia
Leesburg, Virginia
Petersburg, Virginia
Weber City, Virginia
Kalama, Washington
North Bend, Washington
Seattle, Washington
Vancouver, Washington
Cody, Wyoming

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