The Story
Plant Bio
A low-growing, clump-forming perennial native to the Carpathian Mountains, prized for its upward-facing, open bell-shaped flowers.
Distinguished by its exceptionally deep, dark violet-purple, almost black, bell-shaped flowers that provide a striking contrast against the bright green foliage.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
9 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Medium
Humidity
Average
Lifespan
Perennial
Native To
Carpathian Mountains
Toxicity
Non-toxic to pets
Bloom period
Summer – Late summer
In flower about 2 months of the year
Planting
How to Grow
- Tuck seeds into well-draining soil in early spring.
- Mist cuttings regularly to maintain humidity for 6 weeks.
- Plant in full sun for best flowering results.
- Water regularly but avoid waterlogged soil throughout the growing season.
- Fertilize monthly with a balanced fertilizer during spring and summer.
- Divide clumps every 2-3 years in early spring for best vigor.
Pro Tip
Use a sandy loam soil with good drainage and mulch to retain moisture.
Keep It Thriving
Care Guide
Do
- Water consistently, especially during dry spells 🌱
- Deadhead spent flowers to encourage more blooms
- Apply fertilizer in spring and summer for healthy growth
- Divide plants every 2-3 years to maintain vigor
Don't
- Avoid overwatering, which can cause root rot ❌
- Don’t plant in heavy clay soil without amendments
- Refrain from pruning in late fall to protect from cold damage
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| 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
Obsidian Carpathian Bellflower questions
What zones can Obsidian Carpathian Bellflower grow in?
Obsidian Carpathian Bellflower 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 Obsidian Carpathian Bellflower deer resistant?
Yes — Obsidian Carpathian Bellflower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Obsidian Carpathian Bellflower bloom?
Obsidian Carpathian Bellflower typically blooms in summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Obsidian Carpathian Bellflower need full sun?
Obsidian Carpathian Bellflower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Campanula to compare
Birch Bellflower
Campanula x birchii 'Hybrids'
Blue Waterfall Bellflower
Campanula poscharskyana 'Blue Waterfall'
Carpathian Bellflower
Campanula carpatica 'Mix'
Clustered Bellflower
Campanula glomerata
Dalmatian bellflower
Campanula portenschlagiana
Prichard's Variety Milky Bellflower
Campanula lactiflora 'Prichard's Variety'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Obsidian Carpathian Bellflower 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.