Heuchera 'Fire Alarm'Heuchera 'Fire Alarm'

Heuchera ‘Fire Alarm’

'Fire Alarm' is bright red in spring and fall and darkens to a brown-red during the summer. This hybrid of H. villosa has thick, leathery red, red leaves that make delightful medium size mound. 'Fire Alarm' complements almost every section of the color palette, but it can stand on its own without question.

USDA Hardiness Zone(s): 5-9
Size (HT/W/FL HT): 9″ / 14″ / 13″
Exposure: Part Shade, Full Sun, Full Shade
Bloom Time(s): June, July, August

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Common Name

Coral Bells




Plant Type

US Patent #


EU Grant #


Hardiness Zone

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Growth Habit

Size (HT/W/FL HT)

9" / 14" / 13"

Finish Time

Bloom Time

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Growth Rate

Most Active Growing Season

Flowering Season

Flower Color

Leaf Color



Moderately well drained, organic soil types are best


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Special Uses

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Nutritional Needs

100 – 150 ppm

Water (Greenhouse)

Dry moderately between waterings

Water (Garden)

Average, better too dry than too wet when established

How Different?

The reddest foliage of any Heuchera! Large glossy leaves shine red all spring through fall. Bigger plant than 'Fire Chief'. Glossier, redder, and more vigorous than 'Autumn Leaves'.

Landscape Value

Accent, container, shade mass planting, mixed beds, winter color.

Finish Time to 4"

4 – 6 weeks


Cooler temperatures bring out the brightest reds. Rated the "Best Heuchera – Shade" in the 2012 Ohio State Trials Won Silver Metal for Novelty at Plantarium in The Netherlands 2014

Grower Notes

Be careful not to bury the crowns when planting.

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Heuchera 'Fire Alarm' - Product Profile
Heuchera 'Fire Alarm' - Growing Recipe
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