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Herbaceous Perennial

Iris 'Party Dress' (TB)

iris 'Party Dress'

'Party Dress' is a rhizomatous, clump-forming perennial to 80cm tall with erect, glaucous foliage. Ruffled, fragrant flowers borne in summer have pale peach standards with deeper coloured falls, tangerine-orange beards and are suffused with burnished gold

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Grey Silver
Summer Gold Orange Pink Green Grey Silver
Autumn
Winter
Position
  • Full sun
Aspect

East–facing or South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Iridaceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright
Potentially harmful
Ingestion may cause severe discomfort. Wear gloves and wash hands after handling
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

Horticultural Group
Tall Bearded irises are herbaceous rhizomatous perennials to 70cm or more, with flowers 10-20cm across, bearded on the falls, in late spring and early summer

How to grow

Cultivation

Grow in well-drained, fertile, neutral to slightly acid soil in full sun; sun on the rhizomes will help to encourage flowering. See also bearded iris cultivation

Propagation

Propagate by division of rhizomes from midsummer to early autumn; see dividing irises

Suggested planting locations and garden types
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Wall side borders
  • Flower borders and beds
Pruning

Remove any dying foliage in autumn, old flower stems can be cut down after flowering. Tall cultivars can have their leaf fans trimmed to one third of the total height to reduce wind rock while the plants are establishing

Pests

May be affected by iris sawfly, aphids, leaf miners, slugs, snails, and wireworms

Diseases

May be affected by iris rhizome rot, iris leaf spot, scorch, a rust, and virus diseases; for more advice see iris diseases

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