Iris pseudacorus 'Variegata' (Yellow flag 'Variegata')

Botanical name

Iris pseudacorus 'Variegata'

Other names

Yellow flag 'Variegata', Variegated yellow flag , Iris pseudacorus 'Marginatus', Variegated Jacob's sword, Yellow fleur-de-lis 'Variegata'

Genus

Iris Iris

Variety or Cultivar

'Variegata' _ 'Variegata' is an extremely vigorous, rhizomatous, deciduous perennial forming an extensive clump of erect, sword-shaped, grey-green leaves with pale yellow or white stripes. Yellow flowers with brown or purple- veined falls bloom in summer.

Foliage

Deciduous

Habit

Clump-forming, Erect

Toxicity

Ingestion may cause severe discomfort.

Awards

RHS AGM (Award of Garden Merit)

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Colour

Flower

Yellow in Summer

Foliage

Variegated, Green, Cream in All seasons

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How to care

Watch out for

Specific pests

Sawflies

Specific diseases

Botryosphaeria fungus , Bacterial soft rot

General care

Pruning

Remove faded flower stems to prevent any unwanted seedlings. Cut back when leaves start to yellow in autumn.

Propagation

Divide every 3-4 years in autumn for best blooms.

Propagation methods

Division

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Monthly care advice

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Where to grow

Iris pseudacorus 'Variegata' (Yellow flag 'Variegata') will reach a height of 1.5m and a spread of 1.5m after 2-5 years.

Suggested uses

Wildflower, Low Maintenance, Flower Arranging, Cottage/Informal, Containers, Coastal, City, Beds and borders, Wildlife

Cultivation

Plant in autumn in full sun in moist to wet, humus-rich, acid soil at pond or stream margins. Site carefully as may naturalize and form large colonies. Tolerates neutral soil & will tolerate light shade in garden soil. Do not allow to dry out.

Soil type

Loamy, Clay

Soil drainage

Boggy damp conditions, Moist but well-drained, Moisture-retentive

Soil pH

Acid, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5

Defra's Risk register #1

Plant name

Iris pseudacorus 'Variegata' (Yellow flag 'Variegata')

Common pest name

Red rice root aphid; Rice root aphid

Scientific pest name

Rhopalosiphum rufiabdominalis

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

Potentially significant glasshouse pest; growers should monitor for its presence. Routine aphid control should be effective in mitigating risk.

Defra's Risk register #2

Plant name

Iris pseudacorus 'Variegata' (Yellow flag 'Variegata')

Common pest name

common blossom thrips; cotton bud thrips; tomato thrips

Scientific pest name

Frankliniella schultzei

Type

Insect

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

Polyphagous glasshouse pest; present in many countries; single finding in UK.

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