Allium fistulosum 'Ishikura'
Spring onion 'Ishikura', Salad onion 'Ishikura', Welsh onion 'Ishikura', Green onion 'Ishikura', Scallion 'Ishikura'
Allium Allium
'Ishikura' _ 'Ishikura' is a perennial grown as an edible vegetable with hollow green leaves and long, white straight stems. This variety is quick to mature and forms long white stalks.
Allium fistulosum 'Ishikura' is: Deciduous
Clump-forming, Upright
RHS AGM (Award of Garden Merit)
Green in Summer
Eelworm (stem and bulb) , Leek moth , Onion fly Eelworm (stem and bulb) , Leek moth , Onion fly
Bolting , Bull neck , Downy mildew , Neck rot , Rust , Saddleback , Shanking , Smut , White rot , White tip Bolting , Bull neck , Downy mildew , Neck rot , Rust , Saddleback , Shanking , Smut , White rot , White tip
Break off any flower heads that appear.
Seed, Sets
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Allium fistulosum 'Ishikura' (Spring onion 'Ishikura') will reach a height of 0.5m and a spread of 0.5m after 1-2 years.
Add to salads, Beds and borders, Flavouring food and drinks
Grow from seed in prepared onion beds in a sunny position. It is a good idea to rotate site annually. When preparing bed in autumn add lime if soil is acid. Before sowing apply a general fertilizer, rake over, tread down and rake again.
Loamy, Sandy
Well-drained
Alkaline, Neutral
Full Sun
South, West
Sheltered
Tender in frost (H3)
We do not currently have companion plants added for this plant.
Allium fistulosum 'Ishikura'
Spring onion 'Ishikura', Salad onion 'Ishikura', Welsh onion 'Ishikura', Green onion 'Ishikura', Scallion 'Ishikura'
Allium Allium
'Ishikura' _ 'Ishikura' is a perennial grown as an edible vegetable with hollow green leaves and long, white straight stems. This variety is quick to mature and forms long white stalks.
Deciduous
Clump-forming, Upright
RHS AGM (Award of Garden Merit)
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Green in Summer
Eelworm (stem and bulb) , Leek moth , Onion fly
Bolting , Bull neck , Downy mildew , Neck rot , Rust , Saddleback , Shanking , Smut , White rot , White tip
Break off any flower heads that appear.
Seed, Sets
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Allium fistulosum 'Ishikura' (Spring onion 'Ishikura') will reach a height of 0.5m and a spread of 0.5m after 1-2 years.
Add to salads, Beds and borders, Flavouring food and drinks
Grow from seed in prepared onion beds in a sunny position. It is a good idea to rotate site annually. When preparing bed in autumn add lime if soil is acid. Before sowing apply a general fertilizer, rake over, tread down and rake again.
Loamy, Sandy
Well-drained
Alkaline, Neutral
Full Sun
South, West
Sheltered
Tender in frost (H3)
Allium fistulosum 'Ishikura' (Spring onion 'Ishikura')
Asain cotton leafworm; Cluster caterpillar; Fall armyworm; Rice cutworm; Taro caterpiller; Tobacco budworm; Tobacco caterpillar; Tobacco cutworm; Tobacco leaf caterpillar
Spodoptera litura
Insect
Absent
3
3
Regulated pest; frequently intercepted with occasional outbreaks which have been successfully eradicated in the UK.
Allium fistulosum 'Ishikura' (Spring onion 'Ishikura')
allium leaf miner
Phytomyza gymnostoma
Insect
Present (Limited)
3
3
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.
Allium fistulosum 'Ishikura' (Spring onion 'Ishikura')
African cottom leafworm; Cotton leafworm; Egyptian cotton leafworm; Egyptian cotton worm; Mediterranean climbing cutworm; Meditteranea Brocade; Tobacco cutworm
Spodoptera littoralis
Insect
Absent
2
3
Regulated pest; frequently intercepted with occasional outbreaks which have been successfully eradicated in the UK.
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: | Loamy, Sandy | Tell us... |
Soil drainage: | Well-drained | Tell us... |
Soil pH: | Alkaline, Neutral | Tell us... |
Light: | Full Sun | Tell us... |
Aspect: | South, West | Tell us... |
Exposure: | Sheltered | Tell us... |
Hardiness: | Tender in frost (H3) | Tell us... |
The St John's Hospice have asked renowned herb farmer Jekka McVicar to create a unique RHS Chelsea Flower Show garden entitled; ‘A Modern Apothecary'. The 62 gold medal award winning… read more
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