Iris x robusta 'Dark Aura' AGM

Conservation Plant (HPS Number P105)

RHS Number and Name Designation (if any): -

Date added to the website: 4th Feb 2025
Date updated on the website: 4th Feb 2025

Introduced: not known
By: Shropshire Group

Shortcuts

Conservation Plant

Information about each plant or seed is shown on this page. Plants in the same Genus or Family are also shown below, enabling you to explore similar plants.

Search other sites for Iris x robusta ‘Dark Aura’

GOOGLE

THE RHS

More information

Support the HPS by becoming a member and you will see multiple search links for this species leading you to a wealth of additional information via websites provided by:

The RHS, Gardeners World, World Flora Online, Kew Gardens
The US National Gardeners Association, Google & Trees and Shrubs Online

You need to be a member of the HPS to view this content

Supporting the HPS by becoming a member enables us to promote plants and gardening, and brings you into a friendly and knowledgeable society to meet and learn from others.

Already a member?

Find out about the HPS

Learn More

View the options

Join Now

Conservation Scheme information for Iris x robusta ‘Dark Aura’

ID: P105
Introduced: not known
By: Shropshire Group
Reason: Jennifer Hewitt purchased in 1979 (supplier unknown). She introduced it to cultivation originally registered as Iris virginica ‘De Luxe’ in 1987 with American Iris Society. That name was found to be invalid according to the International Code of Nomenclature for Cultivated Plants (ICNCP) and was renamed and registered as x robusta ‘Dark Aura’ in 1996. Awarded RHS AGM in 2005.
Verified by: British Iris Society
Description: Rhizomatous herbaceous perennial. Iris x robusta are natural hybrids of I. versicolor and I. virginica.
Dimensions: 100cm x 50cm
Flowers: Dark purple stems to 90cm carry a number of small flowers. Standards are cupped, erect, violet. Falls are drooping, violet, with a yellow, white-edged signal.
Foliage: Narrow leaves, dark red in spring, becoming green with a purple tinge at the base.
Soil: Neutral to acid moisture retentive soil.
Aspect: Full sun or part-shade
Pests: Generally no problems.
Cultivation: Needs moisture - good for marginal or bog garden planting.
Propagation: Divide rhizomes after flowering, leaving 2 or 3 leaf fans per division.

Member Feedback

On June 18, 2025 Michael Millington said:

Early days as I've had it for less than a year, but seems to have settled down and is flowering.

Extended plant information for Iris x robusta ‘Dark Aura’

Support the HPS by becoming a member and you will also see additional information on this plant (where it exists) such as their hardiness zones or US zone codes and seed sowing tips. Not all plants have all this information, but many do.

You need to be a member of the HPS to view this content

Supporting the HPS by becoming a member enables us to promote plants and gardening, and brings you into a friendly and knowledgeable society to meet and learn from others.

Already a member?

Find out about the HPS

Learn More

View the options

Join Now

Articles and Publications linked to this species

Loop count: 1

Searching for articles and blog posts for the species Iris x robusta 'Dark Aura'

post_type=publication&posts_per_page=12&order=ASC&orderby=title&tax_query[0][taxonomy]=species&tax_query[0][field]=name&tax_query[0][terms][]=Iris x robusta 'Dark Aura'&tax_query[0][operator]=IN&tax_query[relation]=AND

Loop count: 0

No publications found

Loop count: 1

1 article found

June 2020 Conservation Feature

Articles and Publications linked to this genus

Searching for articles and blog posts for the genus Iris

2 linked publications

Book reviews by Rosemary FitzGerald
Publication: The Hardy Plant
Edition: Vol. 46 No 2 Autumn 2025

Book Reviews by Ro Fitzgerald
Publication: The Hardy Plant
Edition: Vol. 47 No 1 Spring 2026

10 linked articles

What’s Happening across the HPS in June 2026

Promiscuous plants and serendipity

Geum coccineum Koi

On a Chalk Hillside – January 2025

What’s Happening Across the HPS in November

HPS News for October 2024

HPS Member Ann-Marie Powell wins an RHS Award for designing the Octavia Hill Garden

On a Chalk Hillside – May 2024

On a Chalk Hillside July 2023 – Developing our garden

On a Chalk Hillside – May 2023, Catching up with Seasonal gardening jobs

Additional plant photos and information

Query: post_type=plant&tax_query[0][taxonomy]=species&tax_query[0][field]=name&tax_query[0][terms][]=Iris x robusta 'Dark Aura'&tax_query[0][operator]=IN&tax_query[relation]=AND&posts_per_page=&orderby=title

Conservation Plant

Iris x robusta ‘Dark Aura’

Iris x robusta 'Dark Aura' AGM

Conservation Plant (HPS Number P105)

Conservation Plant

Search other sites for Iris x robusta ‘Dark Aura’

More information

Conservation Scheme information for Iris x robusta ‘Dark Aura’

Member Feedback

Extended plant information for Iris x robusta ‘Dark Aura’

Articles and Publications linked to this species

Articles and Publications linked to this genus

Additional plant photos and information

Plants in the genus : Iris

Plants in the family : Iridaceae

Explore

Legal

Follow

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.