Heuchera, Alum Root, Alumroot, Coral Bells, Coralbells 'Amethyst Myst'


Family: Saxifragaceae (saks-ih-frag-AY-see-ee) (Info)
Genus: Heuchera (HEW-ker-a) (Info)
Cultivar: Amethyst Myst
Additional cultivar information:(aka Amethyst Mist)
» View all varieties of Heucheras




18-24 in. (45-60 cm)

24-36 in. (60-90 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:

Pale Green


Bloom Time:

Late Spring/Early Summer


Grown for foliage

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)

7.9 to 8.5 (alkaline)

Patent Information:


Propagation Methods:

By dividing the rootball

From leaf cuttings

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

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

Foliage Color:


Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


This plant is said to grow outdoors in the following regions:

Conway, Arkansas

Arcata, California

Camarillo, California

Clayton, California

San Francisco, California

Vacaville, California

Berthoud, Colorado

Panama City, Florida

Augusta, Georgia

Lawrenceville, Georgia

Lilburn, Georgia

Roswell, Georgia

Hampton, Illinois

Mount Prospect, Illinois

Hebron, Kentucky

Glen Burnie, Maryland

Dracut, Massachusetts

South Easton, Massachusetts

Ludington, Michigan

Plainwell, Michigan

Royal Oak, Michigan

Traverse City, Michigan

Westland, Michigan

Perham, Minnesota

Mathiston, Mississippi

Natchez, Mississippi

Reno, Nevada

Cape May Court House, New Jersey

Sicklerville, New Jersey

Teaneck, New Jersey

Ithaca, New York

Chapel Hill, North Carolina

Elizabeth City, North Carolina

Cincinnati, Ohio

Clyde, Ohio

Coshocton, Ohio

Oklahoma City, Oklahoma

Baker City, Oregon

Beaverton, Oregon

Gresham, Oregon

Portland, Oregon

Jamison, Pennsylvania

Norristown, Pennsylvania

Conway, South Carolina

Christiana, Tennessee

Cookeville, Tennessee

Palestine, Texas

Big Stone Gap, Virginia

Herndon, Virginia

Lexington, Virginia

Linden, Virginia

Springfield, Virginia

Bellingham, Washington

Kalama, Washington

Kirkland, Washington

Puyallup, Washington(2 reports)

Vancouver, Washington

Appleton, Wisconsin

Belleville, Wisconsin

Minocqua, Wisconsin

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Gardeners' Notes:


On Jan 27, 2010, killdawabbit from Christiana, TN (Zone 6b) wrote:

Amethyst Myst is my best doer here. I've spread this one around my garden. Easy to propagate. I love it!


On Nov 24, 2009, stormyla from Norristown, PA (Zone 6b) wrote:

This Heuchera is very attractive and has proven a lot hardier than some of my other varieities. It did not heave this winter, as many others did and it survived deluge conditions in the spring and drought conditions in July. It gets late afternoon sun in my garden.


On Aug 14, 2008, joanlc from Perham, MN (Zone 3b) wrote:

I'm adding a note only to point out that it has grown well through three winters now in my Zone 3 garden; and last winter was definitely a "test" winter, for sustained cold. It is in a somewhat sheltered place - the wind doesn't get to that area, and it has consistent snow cover. The soil is sandy loam, and water is consistent. In my opinion, zone information is only one of several factors that affect plant survival, and often not the deciding one. I concur with the positive comments of others - fascinating foliage that changes shades slightly as it matures, and always a strong, healthy mound. Whenever I go by its garden, it catches my eye first, before all other plants. Plants with other colors of foliage make excellent companions.


On Aug 12, 2007, cme24 from Ithaca, NY wrote:

Note that deer like to eat this and other heucheras.


On Mar 20, 2007, LeeAnne151 from Portland, OR wrote:

'Amethyst Myst' is superior to the old 'Palace Purple' it is one of my favorite Heucheras and I grow close to two dozen of them. Has really nice color that doesn't fade and it is a more compact grower.

Make sure you bait for slugs if they are a problem in your area.

Otherwise the plant is care free except for watering in severe drought.


On Nov 14, 2005, sharonmi from Westland, MI (Zone 6a) wrote:

I have several of these alum roots, and I really like them..even tore out my Palace Purple to replace with the Amethyst Mist (those were seed grown and quite variable, too much khaki green for my taste). I have them planted in the outer drip line of a med. size tree, a fairly dry area and they are thriving. They survived a very cold winter (but had lots of snow cover) and a very hot, dry summer.


On Jul 30, 2005, jamie68 from Vancouver, WA (Zone 8b) wrote:

Very nice plant...lovely dark foliage!!! Takes some sun, but probably needs more shade in sunnier, hotter climates...


On Jun 25, 2005, Gindee77 from Hampton, IL (Zone 5a) wrote:

I love this as a companion plant to my roses. It adds a lovely dark maroon color to the green landscape.


On Mar 21, 2005, CatskillKarma from West Kill, NY wrote:

This heuchera seemed more tender than others I have grown and only made it through two Catskill winters. The one in more sun did better than the one in more shade. It also seemed vulnerable to "watering" by the dog, which browned it up pretty badly. It was gorgeous while it lasted, though..


On Mar 20, 2005, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Stunning foliage. My absolute fave of all the heucheras.


On Feb 14, 2004, hotlanta from Lilburn, GA (Zone 8a) wrote:

I enjoy the color the leaves add to the winter garden. The plants do not go dorment in the Atlanta area. They are very versatile too. They can be grown in partial shade to sun; borders, beds or containers.