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Allium hollandicum 'Purple Sensation' (Dutch garlic 'Purple Sensation')

Other names: Allium aflatunense 'Purple Sensation', 'Purple Sensation', Allium 'Purple Sensation'

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Add to plant list
Variety or Cultivar
'Purple Sensation' is a clump-forming, deciduous, bulbous perennial with strap-shaped, mid- to grey-green leaves and, in summer, erect stems bearing spherical umbels of reddish-purple flowers blooming after the leaves died down.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
0.9 m 0.5 m 2-5 years
2 ft 1 ft 2-5 years

Where to grow

Soil type
  • Chalky
  • Clay
  • Loamy
  • Sandy
Soil drainage
  • Moist but well-drained
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Full Sun
Aspect
  • East
  • West
  • South
  • North
Exposure
  • Sheltered

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Additional plant details

Cultivation

Grow in fertile, well-drained soil in sun. Add grit to clay soil to improve drainage.

Suggested uses

Gravel, Architectural, Flower Arranging, Beds and borders, Cottage/Informal

UK hardiness

H7

USDA zones

Zone 4, Zone 5, Zone 6, Zone 7, Zone 8

Sunset zone

WUCOLS

North-Central Coastal = Moderate/Medium
Central Valley = Moderate/Medium
South Coastal = Moderate/Medium
South Inland = Moderate/Medium
High and Intermediate Desert = Inappropriate
Low Desert = Inappropriate

Foliage

Deciduous

Habit

Clump-forming, Erect flower stem

Native to

Garden origin

Drought tolerant

No

Flood tolerant

No

Fragrance

Foliage has a nice fragrence

Toxicity

Not toxic

Plant care

Pruning

No pruning required. Leaves can be removed after they have completely died back.

Propagation methods

Seed, Division

Pests

Pest free, may suffer from slugs on new growth.

Diseases

Onion rot

Downy mildew

Divide and replant after flowering

Add grit to clay soils to improve the drainage

Separate bulb offsets

Plant Allium, Erythronium, Colchicum and Galtonia bulbs

Remove faded or dead foliage (optional)

Other plants

Plants in this Genus (0)

Allium

Companion plants (0)

Related content

Discuss Allium hollandicum 'Purple Sensation' with other Shoot members

Re: Re: Allium purple sensation

Shoot User
1489 0
BTW, thank you very much for this advice!
Posted: Sunday 20th of June 2010 04:33 PM

Re: Allium purple sensation

Shoot User
1489 1
Hi Lobeck,

Allium hollandicum ‘Purple Sensation’ are May/ June flowering, so it’s perfectly normal for them to be dying back now. It’s also not uncommon for the odd one to produce a bulb in the flower head as you are describing. It’s usually not advisable to use these seeds and bulbs to grow on, as they tend to result in much paler flowers, and you will lose the deep purple that you have experienced this year. To avoid this, remove these immature seed heads now before they have a chance to set seed.

Remember to add the plant to your ‘plants I have’ list to receive regular care instructions.

Hope this helps!
Katy
Posted: Tuesday 8th of June 2010 03:23 PM Last reply: Tuesday 8th of June 2010 03:24 PM

Allium purple sensation

Shoot User
1489 1
Hi,

I planted 5 allium bulbs outside in a pot last October and they came up fine about 6 weeks ago. Now the flowers have all dried up and two of the 'globes' of flowers have what look like bulbs growing in the centre and all have lots of green ?seed pods where the flowers were.

Is this suposed to have happened by now? Can I plant the 'bulbs' or green pods to get new plants? And should I pick all the old flowers off and expect to see new ones?

Thank you for educating me!

Lobeck
Posted: Sunday 6th of June 2010 06:07 PM Last reply: Saturday 15th of March 2025 12:34 AM
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