Fire Alarm Coral Bells
Heuchera sanguinea 'Fire Alarm'
Essentials
At a Glance
Plant Type
Perennial
Height
9 inches
Width
14 inches
Light
Partial Sun, Shade
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
North America
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
A clump-forming perennial primarily grown for its foliage. Forms a mound of leathery, rounded, lobed leaves that emerge bright red in spring, darken through summer, and brighten again in fall. This cultivar is noted for its incredibly intense red foliage, which is perhaps the reddest of any heuchera. The color holds well through the summer.
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds lightly into moist, well-draining soil in early spring.
- Mist cuttings regularly to maintain humidity and promote rooting.
- Transplant young plants in early spring after the threat of frost has passed.
- Space plants approximately 12 inches apart for optimal growth.
- Mulch around the base to retain moisture and suppress weeds.
- Fertilize with a balanced, slow-release fertilizer in early spring.
Pro Tip
Provide partial shade in hotter climates to prevent leaf scorch and maintain vibrant foliage.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil consistently moist 🌱
- Apply mulch to conserve moisture and regulate soil temperature
- Prune back dead or damaged leaves to encourage healthy growth
- Fertilize in early spring with a balanced fertilizer
- Monitor for pests and treat early
Don't
- Avoid overwatering which can lead to root rot ❌
- Do not expose to full, harsh sunlight in hot climates
- Refrain from neglecting pest control measures
- Do not disturb roots during dormant season
- Avoid planting in poorly draining soil
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Mulch | ||||||||||||
| 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
Fire Alarm Coral Bells questions
What zones can Fire Alarm Coral Bells grow in?
Fire Alarm Coral Bells 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 Fire Alarm Coral Bells deer resistant?
Yes — Fire Alarm Coral Bells is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Fire Alarm Coral Bells bloom?
Fire Alarm Coral Bells typically blooms in late spring to early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Fire Alarm Coral Bells need full sun?
Fire Alarm Coral Bells does best in part shade.
Is Fire Alarm Coral Bells drought tolerant?
Yes — once established (usually after the first full season), Fire Alarm Coral Bells handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Heuchera to compare
Mixed Coral Bells
Heuchera sanguinea 'Mixed Coral Bells'
Midnight Rose Coral Bell
Heuchera x brizoides 'Midnight Rose'
Electra Coral Bells
Heuchera sanguinea 'Electra'
Wildberry Coral Bells
Heuchera x brizoides 'Wildberry'
Palace Purple Coral Bells
Heuchera americana 'Palace Purple'
Obsidian Coral Bells
Heuchera villosa 'Obsidian'
Keep exploring
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Grow Fire Alarm Coral Bells 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.
