Iris pallida subsp. cengialti

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Synonyms

Iris cengialti

Herbaceous Perennial
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A dwarf perennial, to around 30cm high, with sword-shaped, slightly grey-green leaves. In early summer, branched stems bear two or three violet-blue flowers from papery, tan-coloured bracts

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Loam Sand
Moisture
Moist but well–drained
pH
Acid or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

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
Correct
Plant Range
NE Italy

How to Grow

Cultivation

Thrives in a sunny position, in neutral to slightly acid soil with good drainage. Plant rhizomes just above soil level, as sun on the rhizomes encourages flowering. See bearded iris cultivation

Propagation

Propagate by division, see dividing irises

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Rock garden
  • Flower borders and beds
  • Wall side borders

Pruning

Remove spent flower stems in summer, and any dying foliage in autumn

Pests

May be susceptible to aphids, slugs, snails and thrips

Diseases

May be susceptible to leaf spots, rust diseases, rhizome rot and viruses; see Iris diseases for more details