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Herbaceous Perennial

Iris unguicularis 'Kilndown'

Algerian iris 'Kilndown'

'Kilndown' is an evergreen, clump-forming plant to 40cm tall, with narrow green leaves and sweetly scented, pale violet-blue flowers opening from mid winter to spring

Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue
Summer
Autumn
Winter Blue
Position
  • Full sun
Aspect

West–facing or South–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Iridaceae
Native to the UK
No
Foliage
Evergreen
Habit
Bushy
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 sharply drained neutral to alkaline soil in full sun; they are ideal for the base of a sunny wall

Propagation

Lift rhizomes and propagate by division, planting immediately in the flowering position usually from midsummer to early autumn

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

No pruning required, tidy plant after flowers fade

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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