Iris 'Benton Benedict' (TB)

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Herbaceous Perennial

A rhizomatous, herbaceous perennial, up to 80cm high in flower, with glaucous, sword-shaped blue-green leaves. The large flowers have soft pink standards flushed with pale brown, the falls pure white, edged with pale brown with dark purple veining, flowering in late May

Position

Full sun

Soil Types

Loam, Chalk, Sand

Size

Time to Maturity
2–5 years

Growing Conditions

Loam Chalk Sand
Moisture
Well–drained
pH
Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or 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
Semi evergreen, Evergreen
Habit
Clump forming, Columnar upright
Potentially harmful
Ingestion may cause severe discomfort. Wear gloves and other protective equipment when 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
Unresolved
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea

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 alkaline loam in full sun, with upper part of rhizomes exposed at soil level and not overshadowed, rotate every 5-6 years. See bearded iris cultivation

Propagation

Propagate by division of rhizomes from midsummer to early autumn, every 3-4 years, see dividing irises

Suggested planting locations and garden types

  • Mediterranean climate plants
  • Gravel garden
  • Cottage and informal garden
  • City and courtyard gardens
  • Architectural
  • Wall side borders
  • Flower borders and beds
  • Cut flowers

Pruning

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

Pests

May be susceptible to slugs, snails, iris thrip and iris sawfly

Diseases

Generally disease-free but may be susceptible to Iris diseases