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The Story
Plant Bio
A striking perennial with tall, sword-like leaves and showy blue flowers.
The cultivar 'Discovered Treasure' is known for its beautiful cobalt blue flowers with a distinctive yellow signal.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
30 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Moderate to high
Humidity
Average
Lifespan
Perennial
Native To
Central and Eastern Europe, Northern Asia
Toxicity
All parts are toxic if ingested
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck iris rhizomes 2 inches deep in well-drained soil.
- Mist cuttings with water to encourage root growth during propagation.
- Plant in early spring for best blooms.
- Water regularly but avoid waterlogging.
- Fertilize with a balanced fertilizer in early spring.
- Divide clumps every 3-4 years to maintain health.
Pro Tip
Plant rhizomes in full sun for vibrant blooms and healthy growth.
Keep It Thriving
Care Guide
Do
- Water deeply during dry spells 🌱
- Apply fertilizer in early spring
- Remove spent flowers to promote rebloom
Don't
- Avoid overwatering to prevent rot ❌
- Don't plant too deep; keep rhizomes near soil surface
- Refrain from neglecting dividing every few years
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Pest Check | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Multiply
Propagation Methods
Good to Know
Common Questions
Discovered Treasure Iris questions
What zones can Discovered Treasure Iris grow in?
Discovered Treasure Iris is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Discovered Treasure Iris deer resistant?
Yes — Discovered Treasure Iris is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Discovered Treasure Iris bloom?
Discovered Treasure Iris typically blooms in late spring to early summer through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Discovered Treasure Iris need full sun?
Discovered Treasure Iris does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Iris to compare
German Iris Bearded Iris
Iris x germanica 'Mix'
Celebration Song Iris
Iris tenuissima 'Celebration Song'
Poem of Ecstasy German Iris
Iris x germanica 'Poem Of Ecstasy'
Siberian Iris 'Paprikash'
Iris x hybrida 'Paprikash'
Dutch Iris Mix
Iris x hollandica 'Mix'
Baboon Bottom Bearded Iris
Iris x germanica 'Baboon Bottom Bearded'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Discovered Treasure Iris 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.