Immortality Tall Bearded Iris
Iris siberica 'Immortality'
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Moderate
Lifespan
Perennial
Native To
Of complex hybrid origin, primarily from Southern Europe and the Mediterranean region.
Toxicity
All parts are toxic if ingested; handling may cause skin irritation.
The Story
Plant Bio
Iris 'Immortality' is a tall bearded iris (Iris germanica group) prized for its vigorous growth and sturdy, well-branched stems. It produces large, fragrant, pure white flowers. A dependable reblooming iris, 'Immortality' produces a spectacular flush of flowers in late spring and then blooms again from late summer into fall under good conditions.
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck seeds into well-drained soil in early fall for natural stratification.
- Water regularly to keep soil moist but not waterlogged during germination.
- Transplant seedlings when they are 3 inches tall, typically in early spring.
- Mulch around plants to retain moisture and suppress weeds.
- Divide clumps every 3-4 years in late summer to promote healthy growth.
- Remove dead or damaged leaves in late fall to prepare for winter.
Pro Tip
Plant in a sunny location with well-drained soil for optimal bloom and growth.
Keep It Thriving
Care Guide
Do
- Water consistently during active growth 🌱
- Provide full sun for best flowering
- Apply a balanced fertilizer in early spring
- Mulch to conserve moisture and regulate soil temperature
- Divide clumps every few years to rejuvenate
Don't
- Avoid overwatering, which can cause root rot ❌
- Don't plant in heavy, waterlogged soil
- Refrain from fertilizing late in the season
- Avoid pruning in late fall or winter
- Don't ignore pest and disease signs
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| Plant | ||||||||||||
| Prune | ||||||||||||
| 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
Immortality Tall Bearded Iris questions
What zones can Immortality Tall Bearded Iris grow in?
Immortality Tall Bearded Iris is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Immortality Tall Bearded Iris deer resistant?
Yes — Immortality Tall Bearded Iris is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Immortality Tall Bearded Iris bloom?
Immortality Tall Bearded Iris typically blooms in late spring to early summer, reblooms late summer to fall through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Immortality Tall Bearded Iris need full sun?
Immortality Tall Bearded Iris does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Immortality Tall Bearded Iris drought tolerant?
Yes — once established (usually after the first full season), Immortality Tall Bearded Iris handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Iris to compare
German Iris Bearded Iris
Iris germanica 'Mix'
Celebration Song Iris
Iris tenuissima 'Celebration Song'
Dutch Iris Mix
Iris hollandica 'Mix'
Siberian Iris 'Paprikash'
Iris x hybrida 'Paprikash'
Poem of Ecstasy German Iris
Iris x germanica 'Poem Of Ecstasy'
Baboon Bottom Bearded Iris
Iris germanica 'Baboon Bottom Bearded'
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Grow Immortality Tall Bearded Iris with confidence
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