Coral Bells, Alumroot, Coralbells, Alum Root 'Rave On'


Family: Saxifragaceae (saks-ih-frag-AY-see-ee) (Info)
Genus: Heuchera (HEW-ker-a) (Info)
Cultivar: Rave On
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6-12 in. (15-30 cm)


12-15 in. (30-38 cm)

15-18 in. (38-45 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Sun to Partial Shade

Bloom Color:


Bloom Time:

Late Spring/Early Summer




This plant is resistant to deer

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

By dividing the rootball

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Foliage Color:


Bloom Characteristics:

Flowers are good for cutting

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round in hardiness zone

Can be grown as an annual


This plant has been said to grow in the following regions:

Tifton, Georgia

Crystal Lake, Illinois

Hebron, Kentucky

Holland, Michigan

Lebanon, Pennsylvania

Ogden, Utah

Locust Dale, Virginia

Spokane, Washington

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Gardeners' Notes:


On May 29, 2015, coriaceous from ROSLINDALE, MA wrote:

This is the best Heuchea I've ever grown.

The leaves are purple (especially on the undersides) with a pronounced silvery overlay. They form a dome typically reaching 7" high and 16" across.

The showy flowers are profuse, a deep coral pink and on stems just the right length to be self-supporting (more than 12" though). They glow when backlit. Flowers are long-lasting both on the plant and in the vase when cut.

This keeps sending up more flower scapes over about 10 weeks, beginning in May and continuing through July. It's one of those rare "bridge" plants that begin in May with the spring flowers and also overlap with the long-blooming late-summer perennials, bridging both seasons. (Camassia is another).

This has been both hardy and... read more


On Feb 29, 2012, marywalters from Holland, MI wrote:

I planted about 9 Heuchera Rave On about 2 years ago and could not believe the flower power! It kept blooming from early summer well into fall and got to enjoy the hummingbirds all summer! Flowers are beautiful and so is the foliage. I've never lost any plants over the winter. Rave On has never "heaved" on me (as is the case with a number of varieties). I have it planted on a slight slope where it gets a lot of sun and is never the worse for wear even late in the season. Hope to get around to planting more as an edging plant along a walkway


On Sep 29, 2010, shewhoplants from Tifton, GA (Zone 8b) wrote:

Beautiful garden plant. very hardy. The flowers are so delicate, growing along many spikes. Mine are planted in a raised bed with shade and filtered sun. At times the bed is dry, but these guys are very hardy and seem to withstand the dry conditions until they are watered. I love them and my garden wouldn't be complete without them.


On May 14, 2010, willmetge from Spokane, WA (Zone 5b) wrote:

Wow, this is an amazing Heuchera! Spectacular flower show. Vigorous. Sun tolerant. Fabulous soft rose leaves with a frosty silver overlay. It is the perfect mix of the classic showy Coral Bell bloom and the spectacular foliage of modern Heuchera hybrids. Mine is on its third year and I'm excited for this year's bloom. Last year I often got comments like "Oh my gosh, what is that?" or "I've never seen a Heuchera like that!"

I have mine planted at the edge of the canopy of a large Maple tree. It gets full sun until about noon and shade after that. I have never amended the soil or added fertilizer. The soil is decent but not very high in organic content. I have Ajuga 'Chocolate Chip', and Saxifraga x arendsii 'Triumph' in front and some Columbine and Petasites japonica var. gig... read more