Blackwater German Iris
Iris germanica 'Blackwater'
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
5, 6, 7, 8
Water
Moderate
Humidity
Average
Lifespan
Many years with proper division
Native To
Europe
Toxicity
Non-toxic
The Story
Plant Bio
Tall bearded iris with striking dark purple to black flowers. Unique coloration, compact growth habit, and excellent for cut flower arrangements.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
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Planting
How to Grow
- Tuck rhizomes 2 inches deep in well-draining soil.
- Plant in full sun for best blooms.
- Water regularly during growth season but avoid waterlogging.
- Fertilize with balanced fertilizer in early spring.
- Mulch to retain moisture and control weeds.
- Divide clumps every 3-4 years in late summer.
Pro Tip
Ensure excellent drainage to prevent rhizome rot and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Water during dry spells 🌱
- Remove faded flowers to encourage rebloom ❌
- Apply fertilizer early spring 🌱
- Divide every 3-4 years 🌱
Don't
- Avoid overwatering to prevent rot ❌
- Don’t plant in heavy clay soil without amendments ❌
- Refrain from neglecting deadheading 🌱
- Don’t expose to excessive shade ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| 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
Blackwater German Iris questions
What zones can Blackwater German Iris grow in?
Blackwater German Iris is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Blackwater German Iris deer resistant?
Yes — Blackwater German Iris is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Blackwater German Iris bloom?
Blackwater German Iris 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 Blackwater German Iris need full sun?
Blackwater German Iris does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Blackwater German Iris drought tolerant?
Yes — once established (usually after the first full season), Blackwater German Iris handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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Iris germanica 'Mix'
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Iris tenuissima 'Celebration Song'
Poem of Ecstasy German Iris
Iris x germanica 'Poem Of Ecstasy'
Dutch Iris Mix
Iris hollandica 'Mix'
Siberian Iris 'Paprikash'
Iris x hybrida 'Paprikash'
Baboon Bottom Bearded Iris
Iris germanica 'Baboon Bottom Bearded'
Keep exploring
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Grow Blackwater German 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.
