Heuchera, Alum Root, Alumroot, Coral Bells, Coralbells 'Key Lime Pie'


Family: Saxifragaceae (saks-ih-frag-AY-see-ee) (Info)
Genus: Heuchera (HEW-ker-a) (Info)
Cultivar: Key Lime Pie
Additional cultivar information:(PP16735; Dolce series; aka Dolce Key Lime Pie, TNHEU042)
Hybridized by Egger
Registered or introduced: 2005
» View all varieties of Heucheras
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12-18 in. (30-45 cm)


12-15 in. (30-38 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:

Full Sun

Sun to Partial Shade

Light Shade

Partial to Full Shade

Bloom Color:


Bloom Time:

Late Spring/Early Summer

Mid Summer


Grown for foliage


Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

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 is said to grow outdoors in the following regions:

Anniston, Alabama

Crockett, California

Los Angeles, California

Orinda, California

San Bernardino, California

San Diego, California

San Jose, California

San Leandro, California

Susanville, California

Augusta, Georgia

Machesney Park, Illinois

Iowa City, Iowa

Hebron, Kentucky

Mount Sterling, Kentucky

Dracut, Massachusetts

Wellesley Hills, Massachusetts

Pinconning, Michigan

Royal Oak, Michigan

Traverse City, Michigan

Hopkins, Minnesota

Prior Lake, Minnesota

Saint James, Minnesota

Mount Vernon, Missouri

Walnut Grove, Missouri

East Amherst, New York

Port Washington, New York

Ronkonkoma, New York

Wellsville, New York

Albemarle, North Carolina

Elizabeth City, North Carolina

Holly Springs, North Carolina

Akron, Ohio

Coshocton, Ohio

Newbury, Ohio

Toledo, Ohio

Portland, Oregon

Jenkintown, Pennsylvania

Norristown, Pennsylvania

Hendersonville, Tennessee

Arlington, Washington

Arlington Heights, Washington

Bellevue, Washington

East Port Orchard, Washington

Orchards, Washington

Oso, Washington

Parkwood, Washington

Port Orchard, Washington

Smokey Point, Washington

Thiensville, Wisconsin

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Gardeners' Notes:


On Jun 27, 2016, MinnesotaMerry from Prior Lake, MN wrote:

I reside in Prior Lake, Minnesota and love coral bells. Dolce Key Lime Pie and Snow Angel are my absolute favorites. They highlight all plants placed in front of them. They are evergreen and, the leaves turn orange in the fall & all winter. I am a master gardener and design landscapes. I have personal experience with over 400 heuchera, heucherella (i.e., Dolce Key Lime Pie, Delta Dawn, Snow Angel, Purple Prince, Gold Zebra, caramel). For Minnesota, coral bells do great with part to full sun. They bloom profusely with 4-10 hours of sun. While their leaves get scorched with 6+ hours of sun, it does not kill the plant. In May, they bloom profusely for 6-8 weeks due to sun exposure. When planted in shade, they do not bloom in Minnesota. Their blooms look even more beautiful in perso... read more


On May 12, 2013, Eldine from Wellsville, NY (Zone 4b) wrote:

I had this in full sun but transplanted to a shadier area last year. Love the color of this variety of heuchera- bright lime green and provides nice contrast, especially to the red leaved heucheras.


On Jun 9, 2012, darylmitchell from Saskatoon, SK (Zone 3a) wrote:

Nice chartreuse colour in deep shade. Strongest of three Coral Bells I planted (others were "Dolce Licorice" and "Marmalade"). Flowers by mid-June. Would recommend.


On Aug 1, 2010, nitegracee from Akron, OH wrote:

I planted 5 Key Limes in the fall of '09 on the north side of my home. None have bloomed and it's August 1st 2010!
They were fed with Miracle Grow early this spring. Should I feed again, or leave alone until next year?
Perhaps they need to be moved to the shade...?


On Jun 1, 2010, AbbyKidabby from Toledo, OH wrote:

Just getting ready to move this to a new location but imagine my surprise when two feet of snow started to melt here in NW Ohio (zone 5) and these bright green leaves were there!


On May 28, 2010, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

This variety of coral bells is really useful to brighten up a shady area. They do seem to burn/fade if they get too much sun; I have moved mine to the more shady areas of my yard. I get a lot of flowers on these and they are pink. Key Lime needs dividing frequently as well; they tend to get more woody in a shorter time than some of my other coral bells. I'll gladly do it, however, because they are so pretty.


On May 27, 2010, zenmom from Salem, MA wrote:

This is a pretty plant, really lights up a shady bed. I *think* I have 'Dolce Key Lime Pie'... but the plant didn't read the plant description! The leaves look like Dolce Key Lime Pie, the flowers look like Lime Rickey. (The squirrels stole the nursery tag.)


On Jul 24, 2009, mcrousse from Holly Springs, NC (Zone 7b) wrote:

A pretty plant for sure. Mine is planted on the east side of my house where it gets part shade. It looks really nice till it heats up in the summer, then the leaves green out more as opposed to the yellowish color they have in cooler weather. Mine also flowered pink.


On May 30, 2008, zak1962 from Pittsburgh, PA wrote:

Purchased this plant in 2006 as a new gardener. I split it 'out of the pot' as an experiment. Two years later I have some of the healthiest coral bells I've ever seen (I have a couple other varieties in the back yard). These plants get morning to early afternoon sun here in Zone 6A. I've included a picture to the right.


On May 30, 2007, northgrass from West Chazy, NY (Zone 4b) wrote:

This is a vigourous, healthy looking plant. Its brigth yellow leaves emerge in early spring and remain attractive all season. I planted mine in a rather shady area. The plant in the photo is in its second season.