General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Minimum cold hardiness: Zone 4b -31.7 °C (-25 °F) to -28.9 °C (-20 °F)
Maximum recommended zone: Zone 10b
Plant Height: 30 inches
Flowers: Showy
Flower Color: Blue
Purple
Bloom Size: 4"-5"
5"-6"
Flower Time: Late spring or early summer
Underground structures: Bulb
Suitable Locations: Xeriscapic
Uses: Cut Flower
Dynamic Accumulator: K (Potassium)
Ca (Calcium)
Na (Sodium)
Wildlife Attractant: Bees
Butterflies
Resistances: Deer Resistant
Rabbit Resistant
Drought tolerant
Propagation: Other methods: Bulbs
Pollinators: Bees
Various insects
Awards and Recognitions: RHS AGM
Other: 2010 Great Plant Picks award winner

Image
Common names
  • Flowering Onion
Also sold as:
  • Allium hollandicum 'Purple Sensation'
  • Allium aflatunense 'Purple Sensation'
  • Allium Persian Blue™

Photo Gallery
Location: Harlow Carr garden, Yorkshire, UK
Date: 2013-06-14
En masse in the Spring borders at Harlow Carr
Location: Kingsport, TN
Date: 2019-04-25
Location: Athol, MA
Date: 2020-06-02

Date: 2020-05-07
Location: Athol, MA
Date: 2020-05-29
Photo by MaryDurtschi
Location: Vermont
Date: 2020-06-07
Location: Athol, MA
Date: 2020-05-30
Location: Roosevelt Island, New York, New York
Date: 2020-05-20
Location: Athol, MA
Date: 2020-06-02
#pollination #bee
Location: Kitchen hosta garden - morning sun only.
Date: 2013-05-18
Location: Belmont garden
Date: 2010-0514
Location: Philadelphia 
Date: 05/06/2022
1st year fall planted, huge leaf diameter.
Location: Vermont
Date: 2022-05-30
Location: central Illinois
Date: 2011-05-09
Location: My garden in St Louis
Date: 2020-05-10
Location: Germany
Date: 2021-05-29
Location: Vermont
Date: 2020-06-23
Location: Athol, MA
Date: 2020-05-30
Location: IL
Date: 2008-06-27
Location: Crosses, Arkansas
Date: 2015-04-29
Location: Athol, MA
Date: 2020-06-02
#pollination
Location: Carson City, NV
Date: 2020-05-07
Location: Athol, MA
Date: 2020-05-21
Location: Vermont
Date: 2017-06-02
Photo by robertduval14
Location: Tennessee
Date: 2014-04-23
Location: Clinton, Michigan 49236
Date: 2018-05-13
"Allium aflatunense 'Purple Sensation', 2018 photo, ornamental on
Location: IL
Date: 2004-05-07
Location: My Garden, Utah
Date: 2014-06-01
Location: Oxfordshire, England
Date: 2017-05-15
Location: Lucketts, Loudoun County, Virginia
Date: 2012-05-05
Location: My Garden in Kalama, Wa
Date: 2016-05-03
  • Uploaded by Joy
Photo by MaryDurtschi
Location: Terrace garden right side
Date: 2010-0514
Location: Terrace garden right side
Date: 2010-0524
Beginning to go to seed.
Location: Washington 8b
Date: 2017-05-14
Location: Oxfordshire, England
Date: 2016-05-20
One and a bud
Location: My North Yorkshire Garden
Date: 2020-05-07
Location: My Gardens
Date: May 19, 2014
Close Up View
Location: KALAMA WA 
Date: 2021-05-16
A little crab spider peeking out.
  • Uploaded by Joy
Location: Athol, MA
Date: 2020-05-24
Location: Sun Zone 6a
Date: 2012-05-13
Stunning deep rich purple.

Date: 2004-05-08
Location: RHS Harlow Carr, Yorkshire UK
Date: 2022-06-24
WS Wanmenhoven plant stand at the 2022 flower show
Location: Washington 8b
Date: 2017-05-05
Location: Washington 8b
Date: 2017-05-05
Location: Lucketts, Loudoun County, Virginia
Date: 2012-04-28
Location: Terrace garden right side
Date: 2008-0514
Location: Millinocket, Maine
Date: 2022-05-30
Location: Aurora, On
Date: 2016-05-27
Location: Athol, MA
Date: 2020-04-18
Location: Athol, MA
Date: 2020-05-16
Location: Harper post, full sun
Date: 2013-0515
Location: Kitchen hosta garden - morning sun only.
Date: 2013-0518
Some in bud just beginning to bloom.
Location: Manitoba, Canada
Date: 2016-05-25
Location: RHS Harlow Carr, Yorkshire, UK
Date: 2019-05-25
Location: Clinton, Michigan 49236
Date: 2017-10-29
Allium aflatunense 'Purple Sensation', 2017, [ornamental onion],
Location: IL
Date: 2015-05-20
Location: RHS Harlow Carr, Yorkshire, UK
Date: 2019-05-22
En masse in the summer borders.
Location: Belmont garden
Date: 2010-0515
Exceptionally tall in this spot.
Location: Carson City, NV
Date: 2020-04-29
Location: My Garden in Kalama, Wa
Date: 2016-05-03
  • Uploaded by Joy
Location: Oxfordshire, England
Date: 2020-05-14
self seeding under the apple trees
Location: KALAMA WA
  • Uploaded by Joy
Location: Crosses, Arkansas
Date: 2016-04-28
Location: KALAMA WA
  • Uploaded by Joy
Location: KALAMA WA
  • Uploaded by Joy
Location: central Illinois
Date: 2020-05-08
Location: Clinton, Michigan 49236
Date: 2017-10-29
Allium aflatunense 'Purple Sensation', 2017, [ornamental onion],
Location: Belmont garden
Date: 2011-0702
Location: Terrace garden right side
Date: 2010-0630
Same bloom time as many tall bearded irises and Russell Lupines.
Location: Aurora, Ontario
Date: 2013-05-29
Location: Manitoba, Canada
Date: 2015-06-10
Location: My garden in Kentucky
Date: 2010-05-04
Location: My garden in Kentucky
Date: 2010-05-05

Courtesy of Diane's Flower Seeds
Location: My garden in Kentucky
Date: 2010-05-04
Location: Manitoba, Canada
Date: 2015-07-03
Location: central Illinois
Date: 2020-05-08
Location: central Illinois
Date: 2020-05-08
Location: RHS Harlow Carr, Yorkshire, UK
Date: 2018-05-04
Location: Peterborough, ON, Canada
Date: 2015-08-14

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Comments:
  • Posted by linjarvis (Peterborough, ON, CANADA - Zone 5a) on Aug 5, 2015 9:24 PM concerning plant:
    I have had success with this plant in Zone 5A although it is slow to spread
Plant Events from our members
chelle On October 24, 2014 Transplanted
Ash tree bed, center.
aspenhill On September 28, 2014 Obtained plant
ADR - qty 25
aspenhill On October 12, 2013 Obtained plant
ADR (qty 15)
Yorkshirelass On June 5, 2017 Miscellaneous Event
Dried seedheads are suitable for inclusion in indoor plant arrangements over winter when not much else is available.
A vase of them with other seedheads and a few small branches off a contorted willow or similar and dressed with minimal decorations are ideal as a Christmas display.
MrsBinWY On April 24, 2021 Transplanted
Planted out under the north side of the 'Mantet' apple tree
MrsBinWY On April 6, 2019 Seeds germinated
lots & lots up! Re-emerged April 2020 & 2021.
MrsBinWY On July 14, 2018 Seeds sown
Several seeds from 2018G in milk jug to back patio for warm moist stratification followed by cold moist stratification.
MrsBinWY On December 17, 2017 Obtained plant
Planted two gift bulbs received 12-15-17 from Samlav :)
mscuser73 On September 16, 2017 Obtained plant
OBI Budaörs, 3 db hagyma
AtaMaj From October 23, 2019 to February 9, 2020 Seeds sown
bulbs planted
antsinmypants On May 15, 2021 Obtained plant
LyraLu On November 3, 2021 Seeds sown
planted 10 bulbs in front bed
dnrevel On November 12, 2021 Seeds sown
Planted 7 Purple Sensation Alliums in front of the Lollipop salvia and near the Acropolis daffodils in the left front garden

Planted 5 or 6 remaining Purple Sensation Alliums South of the drain near the Hellebores and near the crazy daisies and poppies.
dnrevel On October 3, 2021 Obtained plant
Obtained bulbs from Raindance farm, 20 Allium bulbs, good price
MuseLea On May 10, 2022 Bloomed
MuseLea On March 20, 2022 Obtained plant
Langton
Mielikki On March 23, 2024 Plant Ended (Removed, Died, Discarded, etc)
Never sprouted.
Mielikki On February 23, 2023 Miscellaneous Event
Bulbs given as a Christmas gift. Planted bulbs on 2/23/2023.
paleohunter On October 18, 2023 Obtained plant
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Beautiful pic! by purpleinopp Nov 27, 2013 5:44 PM 7

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