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Iris chrysographes (Gold-marked iris)

Beginner
skill rating
1 hour care
per year
0.5m
Max height
0.3m
Max spread
2-5 years
To maturity
Low
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

Dark-purple, Reddish-purple in Summer

Foliage

Grey-green in Spring; Grey-green in Summer

How to care

Watch out for

Specific pests

Slugs , Snails Slugs , Snails

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.

Foliage

Deciduous

Habit

Clump-forming, Erect

Toxicity

Ingestion may cause severe discomfort.

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Dark-purple, Reddish-purple in Summer

Foliage

Grey-green in Spring; Grey-green in Summer


How to care

Watch out for

Specific pests

Slugs , Snails

Specific diseases

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


Monthly care advice


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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Iris chrysographes (Gold-marked iris)

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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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