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BogsHerbaceous Perennial

Iris × robusta 'Gerald Darby'

iris 'Gerald Darby'

A rhizomatous perennial to 1.2m in height, with arching, narrow leaves and purplish stems bearing 3-4 violet-purple flowers, the falls whitish at the base with a yellow flash and dark veins

Synonyms
Iris laevigata 'Gerald Darby'
Iris versicolor 'Gerald Darby'
see moreIris 'Gerald Darby'
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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Clay
Loam
Sand
Moisture
Poorly–drained
pH
Acid
Colour & scent
StemFlowerFoliageFruit
Spring Purple White Yellow Green
Summer Green
Autumn Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or East–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Iridaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
Harmful if eaten. Wear gloves and other protective equipment when handling. Pets: Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus

Iris may be rhizomatous or bulbous perennials, with narrow leaves and erect stems bearing flowers with 3 large spreading or pendent fall petals, alternating with 3 erect, often smaller, standard petals, in late winter, spring or early summer

Name status

Accepted

How to grow

Cultivation

Grow in moist to wet, deep, humus-rich, acid soil; thrives at the margins of ponds or streams

Propagation

Propagate by division of rhizomes from midsummer to early autumn

Suggested planting locations and garden types
  • Cottage and informal garden
  • Cut flowers
  • Flower borders and beds
Pruning

Remove any dying foliage, old flower stems can be cut down after flowering

Pests

May be susceptible to slugs, snails and thrips

Diseases

May be susceptible to aphid-borne viruses, bacterial soft rot and grey moulds; see Iris diseases

Get involved

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