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Allium (any bulbous, ornamental variety) (Allium (any bulbous, ornamental variety))

Beginner
skill rating
2 hours care
per year
0.9m
Max height
0.2m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Allium (any bulbous, ornamental variety)

Other names

Allium (any bulbous, ornamental variety)

Genus

Allium Allium

Variety or Cultivar

Allium (any bulbous, ornamental variety) _ If you don't know the variety name of your bulbous, ornamental Allium, you can add this plant to your lists to get care advice.

Allium (any bulbous, ornamental variety) are bulbous, herbaceous perennials forming narrow clumps of erect, cylindrical or linear, onion-scented, green leaves and rounded umbels of white, pink, or purple flowers in spring, summer, or autumn.


Allium (any bulbous, ornamental variety) is: Deciduous

Fragrance

Scented leaves

Habit

Erect, Clump-forming

Flower

Yellow, Pink, Purple, White in Spring; Purple, Pink, Yellow, White in Summer; White, Purple, Pink, Yellow in Autumn

Foliage

Green in Spring; Green in Summer; Green in Autumn

How to care

Watch out for

Specific pests

Slugs Slugs

Onion rot Onion rot

General care

Pruning

Deadhead or cut back after flowering.

Propagation methods

Division, Seed


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Where to grow

Allium (any bulbous, ornamental variety) (Allium (any bulbous, ornamental variety)) will reach a height of 0.9m and a spread of 0.2m after 2-5 years.

Suggested uses

Architectural, Beds and borders, Bees (attract & feed bees), Cottage/Informal, Flower Arranging, Underplanting

Cultivation

Grow in fertile, well-drained soil in full sun. Plant in autumn 5-10cm deep. Add grit to clay soils to improve drainage. Some varieties tolerate partial shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

Botanical name

Allium (any bulbous, ornamental variety)

Other names

Allium (any bulbous, ornamental variety)

Genus

Allium Allium

Variety or Cultivar

Allium (any bulbous, ornamental variety) _ If you don't know the variety name of your bulbous, ornamental Allium, you can add this plant to your lists to get care advice.

Allium (any bulbous, ornamental variety) are bulbous, herbaceous perennials forming narrow clumps of erect, cylindrical or linear, onion-scented, green leaves and rounded umbels of white, pink, or purple flowers in spring, summer, or autumn.

Foliage

Deciduous

Fragrance

Scented leaves

Habit

Erect, Clump-forming


Colour

Flower

Yellow, Pink, Purple, White in Spring; Purple, Pink, Yellow, White in Summer; White, Purple, Pink, Yellow in Autumn

Foliage

Green in Spring; Green in Summer; Green in Autumn


How to care

Watch out for

Specific pests

Slugs

Specific diseases

Onion rot

General care

Pruning

Deadhead or cut back after flowering.

Propagation methods

Division, Seed


Monthly care advice


Where to grow

Allium (any bulbous, ornamental variety) (Allium (any bulbous, ornamental variety)) will reach a height of 0.9m and a spread of 0.2m after 2-5 years.

Suggested uses

Architectural, Beds and borders, Bees (attract & feed bees), Cottage/Informal, Flower Arranging, Underplanting

Cultivation

Grow in fertile, well-drained soil in full sun. Plant in autumn 5-10cm deep. Add grit to clay soils to improve drainage. Some varieties tolerate partial shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 10, Zone 9, Zone 8, Zone 7

Defra's Risk register #1

Plant name

Allium (any bulbous, ornamental variety) (Allium (any bulbous, ornamental variety))

Common pest name

Asain cotton leafworm; Cluster caterpillar; Fall armyworm; Rice cutworm; Taro caterpiller; Tobacco budworm; Tobacco caterpillar; Tobacco cutworm; Tobacco leaf caterpillar

Scientific pest name

Spodoptera litura

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Regulated pest; frequently intercepted with occasional outbreaks which have been successfully eradicated in the UK.

Defra's Risk register #2

Plant name

Allium (any bulbous, ornamental variety) (Allium (any bulbous, ornamental variety))

Common pest name

allium leaf miner

Scientific pest name

Phytomyza gymnostoma

Type

Insect

Current status in UK

Present (Limited)

Likelihood to spread in UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Pest of Allium already present in UK and spreading; previous consultation supported awareness raising only; industry should prepare for the event of findings in commercial crops.

Defra's Risk register #3

Plant name

Allium (any bulbous, ornamental variety) (Allium (any bulbous, ornamental variety))

Common pest name

Nematode; common spiral; Spiral nematode; Steiners spiral nematode

Scientific pest name

Helicotylenchus dihystera

Type

Nematode

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Nematode pest unlikely to be very damaging in its own right; but used as a an indicator species to assess compliance of soil requirements of imported plants to be kept under review in light of EFSA evaluation of soil requirements.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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