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Herbaceous Perennial

Iris 'Peter Hewitt' (Sib)

Siberian iris 'Peter Hewitt'

'Peter Hewitt' is a vigorous, spreading plant with lax green foliage to 110cm long. Flower stems are straight, erect to 93cm, bearing up to 3 flowers. Standards and falls both rather drooping, a rich blue-violet with a very thin gold edge to each fall and a striking gold central signal with dark veining at each base

Synonyms
Iris sibirica 'Peter Hewitt'
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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
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Gold Green
Autumn
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or South–facing or °Â±ð²õ³Ù–f²¹³¦¾±²Ô²µ

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Iridaceae
Native to GB / Ireland
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

Horticultural Group
Sibirica irises are rhizomatous perennials, to 1.2m tall, with narrow leaves and erect stems bearing up to 5 beardless flowers 6-7cm wide in early summer. Form and colour vary considerably among cultivars

How to grow

Cultivation

Grow in any good garden soil that is preferably moist but not waterlogged. In drier soils, dig in well-rotted organic matter before planting then apply as a mulch each spring

Propagation

Propagate by division of rhizomes from midsummer to early autumn

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

Remove any dying foliage in autumn, 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

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