Iris 'Holden Clough'
Iris 'Holden Clough', Laevigatae iris 'Holden Clough', Yellow flag 'Holden Clough'
Iris Iris
'Holden Clough' _ 'Holden Clough' is an erect, clump-forming, rhizomatous, evergreen to semi-evergreen perennial with arching, grey-green leaves and branching stems bearing purple-veined, yellow flowers in late spring and early summer.
Iris 'Holden Clough' is: Deciduous
Clump-forming, Erect
Ingestion may cause severe discomfort.
RHS AGM (Award of Garden Merit)
Yellow, Veined in Spring; Yellow, Veined in Summer
Grey-green in All seasons
Aphids , Caterpillars , Slugs Aphids , Caterpillars , Slugs
May be subject to a virus.
Grey mould , Iris rhizome rot Grey mould , Iris rhizome rot
Remove spent flower stems.
Divide rhizomes after the plant has finished flowering, approximately every 3 years.
Division
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Iris 'Holden Clough' (Iris 'Holden Clough') will reach a height of 0.9m and a spread of 0.5m after 2-5 years.
Beds and borders, City, Coastal, Cottage/Informal
Grow in moist soil in full sun or partial shade. In drier conditions, dig in well-rotted organic matter prior to planting. Mulch every spring.
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Moist but well-drained, Moisture-retentive
Acid, Alkaline, Neutral
Partial Shade, Full Sun
South, East, West
Sheltered
Hardy (H4)
We do not currently have companion plants added for this plant.
Iris 'Holden Clough'
Iris 'Holden Clough', Laevigatae iris 'Holden Clough', Yellow flag 'Holden Clough'
Iris Iris
'Holden Clough' _ 'Holden Clough' is an erect, clump-forming, rhizomatous, evergreen to semi-evergreen perennial with arching, grey-green leaves and branching stems bearing purple-veined, yellow flowers in late spring and early summer.
Deciduous
Clump-forming, Erect
Ingestion may cause severe discomfort.
RHS AGM (Award of Garden Merit)
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Yellow, Veined in Spring; Yellow, Veined in Summer
Grey-green in All seasons
Aphids , Caterpillars , Slugs
May be subject to a virus.
Remove spent flower stems.
Divide rhizomes after the plant has finished flowering, approximately every 3 years.
Division
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Iris 'Holden Clough' (Iris 'Holden Clough') will reach a height of 0.9m and a spread of 0.5m after 2-5 years.
Beds and borders, City, Coastal, Cottage/Informal
Grow in moist soil in full sun or partial shade. In drier conditions, dig in well-rotted organic matter prior to planting. Mulch every spring.
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Moist but well-drained, Moisture-retentive
Acid, Alkaline, Neutral
Partial Shade, Full Sun
South, East, West
Sheltered
Hardy (H4)
Zone 8, Zone 7, Zone 6, Zone 5
Iris 'Holden Clough' (Iris 'Holden Clough')
Red rice root aphid; Rice root aphid
Rhopalosiphum rufiabdominalis
Insect
Absent
3
3
Potentially significant glasshouse pest; growers should monitor for its presence. Routine aphid control should be effective in mitigating risk.
Iris 'Holden Clough' (Iris 'Holden Clough')
common blossom thrips; cotton bud thrips; tomato thrips
Frankliniella schultzei
Insect
Absent
2
3
Polyphagous glasshouse pest; present in many countries; single finding in 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: | Chalky, Clay, Loamy, Sandy (will tolerate most soil types) | Tell us... |
Soil drainage: | Moist but well-drained, Moisture-retentive | 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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