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Iris chrysographes (Gold-marked iris)
1 hour care
per year
per year
0.5m
Max height
Max height
0.3m
Max spread
Max spread
2-5 years
To maturity
To maturity
Low
Toxicity
Toxicity
Plant details
Botanical name
Iris chrysographes
Other names
Gold-marked iris, Black iris
Genus
Iris Iris
Species
I. chrysographes - I. chrysographes is a rhizomatous, herbaceous perennial with flat, linear, grey-green leaves and, in early summer, lightly fragrant, dark purple to dark reddish-purple flowers with gold-marked falls.
Iris chrysographes is: Deciduous
Habit
Clump-forming, Erect
Toxicity
Ingestion may cause severe discomfort.
Awards
RHS AGM (Award of Garden Merit)
Flower
Reddish-purple, Dark-purple in Summer
Foliage
Grey-green in Spring; Grey-green in Summer
How to care
Watch out for
Specific pests
Grey mould , Iris rhizome rot Grey mould , Iris rhizome rot
General care
Pruning
Remove faded or dead foliage in autumn. Cut down old flower stems after flowering.
Propagation methods
Division
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Where to grow
Iris chrysographes (Gold-marked iris) will reach a height of 0.5m and a spread of 0.3m after 2-5 years.
Suggested uses
Beds and borders, City, Coastal, Cottage/Informal, Flower Arranging, Wallside and trellises, Waterside
Cultivation
Grow in most soil that is preferably moist but not waterlogged. In drier soils, dig in well-rotted manure before planting and apply as a mulch each spring.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moist but well-drained, Moisture-retentive, Well-drained
Soil pH
Acid, Neutral
Light
Partial Shade, Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
Botanical name
Iris chrysographes
Other names
Gold-marked iris, Black iris
Genus
Iris Iris
Species
I. chrysographes - I. chrysographes is a rhizomatous, herbaceous perennial with flat, linear, grey-green leaves and, in early summer, lightly fragrant, dark purple to dark reddish-purple flowers with gold-marked falls.
Native to
Southern China
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
Reddish-purple, Dark-purple in Summer
Foliage
Grey-green in Spring; Grey-green in Summer
How to care
Watch out for
Specific pests
Specific diseases
General care
Pruning
Remove faded or dead foliage in autumn. Cut down old flower stems after flowering.
Propagation methods
Division
Monthly care advice
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Where to grow
Iris chrysographes (Gold-marked iris) will reach a height of 0.5m and a spread of 0.3m after 2-5 years.
Suggested uses
Beds and borders, City, Coastal, Cottage/Informal, Flower Arranging, Wallside and trellises, Waterside
Cultivation
Grow in most soil that is preferably moist but not waterlogged. In drier soils, dig in well-rotted manure before planting and apply as a mulch each spring.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moist but well-drained, Moisture-retentive, Well-drained
Soil pH
Acid, Neutral
Light
Partial Shade, Full Sun
Aspect
South, East, 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, Zone 4, Zone 3
Defra's Risk register #1
Plant name
Iris chrysographes (Gold-marked iris)
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 chrysographes (Gold-marked iris)
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: 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, Well-drained | Tell us... |
| Soil pH: | Acid, Neutral | Tell us... |
| Light: | Partial Shade, Full Sun | Tell us... |
| Aspect: | South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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