Iris 'Perry's Blue' (Sib)
Siberian iris 'Perry's Blue'
A clump-forming perennial, to 85cm in height, with slender strap-like grey-green leaves and striking sky blue flowers with white markings borne in early summer
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Blue White | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical 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
This cultivar is perfect for planting by a sunny waterside in moist but well-drained (not waterlogged), neutral to slightly acidic soil. Looks stunning planted in bold clumps. Plant in soil that has been improved with well-rotted manure or garden compost and do not allow to dry out, particularly as the plant is getting established
Propagation
Divide clumps in early spring or autumn. If planted in a container, it will need dividing and re-potting every couple of years in spring
Suggested planting locations and garden types
- Coastal
- Cottage and informal garden
- Patio and container plants
- City and courtyard gardens
- Low Maintenance
- Flower borders and beds
Pruning
Deadhead after flowering. Cut back foliage in autumn
Pests
Diseases
May be susceptible to aphid-borne viruses, bacterial soft rot and grey moulds; see Iris diseases
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.