
Siberian Iris 'Perry's Blue'
Iris sibirica 'Perry'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Medium to High
Humidity
Average
Lifespan
Perennial
Native To
Siberia and Central Asia
Toxicity
All parts may cause discomfort if ingested.
The Story
Plant Bio
Siberian irises are clump-forming perennials with narrow, grass-like leaves. They produce elegant, beardless flowers on slender stems above the foliage in late spring and early summer. They are valued for their hardiness and graceful appearance. An heirloom cultivar dating back to 1912, 'Perry's Blue' is celebrated for its classic, clear, sky-blue flowers with delicate veining on the falls. It is a reliable and vigorous grower, forming substantial clumps over time.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Choose a well-drained, sunny location for planting.
- Tuck rhizomes 2-3 inches deep into the soil in early spring.
- Mist the soil lightly to keep it moist but not waterlogged.
- Allow 12-16 inches of space between each plant for growth.
- Water regularly during the first growing season to establish roots.
- Divide clumps every 3-4 years in late summer for optimal vigor.
Pro Tip
Plant in well-drained soil with full sun for best blooms.
Keep It Thriving
Care Guide
Do
- Water during dry spells to keep soil moist 🌱
- Apply a balanced fertilizer in early spring
- Remove dead foliage to encourage healthy growth
Don't
- Avoid waterlogging which can cause rhizome rot ❌
- Don’t plant too deep—keep rhizomes near soil surface
- Refrain from over-fertilizing to prevent lush foliage over flowers
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Siberian Iris 'Perry's Blue' questions
What zones can Siberian Iris 'Perry's Blue' grow in?
Siberian Iris 'Perry's Blue' is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Siberian Iris 'Perry's Blue' deer resistant?
Yes — Siberian Iris 'Perry's Blue' is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Siberian Iris 'Perry's Blue' bloom?
Siberian Iris 'Perry's Blue' typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Siberian Iris 'Perry's Blue' need full sun?
Siberian Iris 'Perry's Blue' does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
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Keep exploring
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Grow Siberian Iris 'Perry's Blue' with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
