Coral Bells

Thrives in USDA Zones 3 - 9

• Start Indoors

  8-10 weeks before last frost for seed-grown plants; divisions can be transplanted in spring or early fall

• Transplant

  Spring after last frost or early fall, at least 6 weeks before first hard freeze

• Harvest

  Cut flower stems at the base once blooms are half-open; divide clumps every 3-4 years in early spring or fall to maintain vigor

• Top-dress around the crown with a thin layer of worm castings each spring to feed roots without burying the crown and risking rot

• Apply a 1-2 inch layer of shredded leaf mulch around plants in late fall to insulate roots and prevent frost heaving, keeping mulch away from the crown itself

• Use compost tea as a foliar drench in early spring to encourage robust new foliage growth and help plants bounce back after winter

• Avoid high-nitrogen fertilizers; excess nitrogen produces lush, floppy growth prone to fungal issues—a balanced compost top-dressing in spring is sufficient

• Interplant with hostas or ferns to provide natural living mulch that moderates soil temperature and reduces moisture stress during summer heat

• Divide clumps in early fall and replant divisions with a handful of finished compost worked into the planting hole to speed re-establishment

• Watering

  If dry weather lingers, let the top 2 inches start to dry before watering again. This plant often responds better to an occasional deep soak than to frequent light watering.

• Feeding

  If growth is strong, compost-rich soil often carries most of the load. If the plant starts looking pale or stalls, a light compost top-dressing or gentle organic feed may help.

• Seasonal care

  In late fall, a light cleanup and fresh mulch can help if winter protection is useful in your climate. Leaving a little space around crowns and trunks often helps air move and keeps excess moisture from sitting there.

• Harvest timing

  Harvests often cluster around May to July. If fruit, leaves, or roots start looking ready, color, size, firmness, and scent usually tell you more than the calendar alone.

• Palace Purple

  One of the first widely grown foliage heucheras, featuring deep burgundy-purple leaves that hold color reasonably well through summer; a 1991 Perennial Plant of the Year and still widely available as a reliable, vigorous performer.

  Best for

  Bold foliage contrast in shade gardens and mixed borders

• Caramel

  Produces large, amber-orange leaves with a peachy underside that glow in dappled light; foliage color is most vivid in cool spring and fall weather, making it a standout in four-season gardens.

  Best for

  Warm-toned foliage combinations with blue hostas or chartreuse grasses

• Obsidian

  Maintains exceptionally dark, near-black glossy foliage across a wide range of summer temperatures, a trait many dark-leaved cultivars lose in heat; consistently rated among the best for sustained color.

  Best for

  High-contrast plantings and container design where foliage drama is the goal

• Lime Rickey

  Bright chartreuse to lime-green ruffled foliage lightens shaded spots effectively; good heat and humidity tolerance makes it a standout in the mid-Atlantic and Southeast where darker cultivars can struggle.

  Best for

  Brightening deep shade; pairing with dark-foliaged companions

• Georgia Peach

  Silvery peach foliage with burgundy veining offers exceptional heat tolerance and strong sun adaptability compared to many foliage heucheras; a useful cultivar for zones 7-9 where summer stress is a limiting factor.

  Best for

  Warm climates and sunnier positions where most heucheras fade

• Vine Weevil
• Foliar Nematodes
• Spider Mites
• Slugs

Origin

Heuchera sanguinea is native to rocky, mountainous areas of the southwestern United States and northern Mexico. It is one of the few Heuchera species with a range extending well into Mexico.

Native Habitat

It naturally occurs on rocky slopes, canyon walls, and stream banks, often in partial shade, at moderate to higher elevations in mountainous terrain.

Current Distribution

While native to a relatively restricted area of North America, it is now widely cultivated as an ornamental garden plant throughout temperate regions of the world, including Europe, North America, and beyond.

Kingdom

Plantae

Family

Saxifrage family (Saxifragaceae)

Genus

Heuchera

Species

sanguinea

• Root System

  Heucheras produce a woody, fibrous crown that gradually pushes upward out of the soil over 3-4 years; this crown-rise is the main reason for periodic division, as exposed crowns dry out and reduce flowering.

• Stem

  Flowering scapes are slender, wiry, and self-supporting, rising 12-24 inches above the foliage mound; they do not require staking and can be cut to the base once blooms fade to tidy the plant without harming the crown.

• Leaves

  Leaves are basal, rounded to kidney-shaped with scalloped or lobed margins, and range from deep green to burgundy, copper, silver-marbled, or near-black depending on cultivar; leaf color is most intense in spring and fall, often fading in summer heat, and scorched or bleached leaves signal too much direct afternoon sun.

• Flowers

  Small, nodding, bell-shaped flowers are borne in loose panicles from late spring through midsummer and are highly attractive to hummingbirds and small native bees; removing spent scapes promptly can encourage a second flush of bloom.

• Fruit

  After flowering, small capsules containing tiny, dust-like seeds form on the scapes; seeds are rarely saved by home growers because named cultivars do not come true, and spent scapes are typically removed before seed set.

Heuchera sanguinea is native to rocky canyons and mountain slopes of Arizona, New Mexico, and northern Mexico, where it grows in the dappled shade of oaks and pines on fast-draining mineral soils. The genus was named by Carl Linnaeus to honor the German botanist Johann Heinrich von Heucher in 1753. The species arrived in European cultivation in the late 19th century, and intensive North American breeding programs in the 20th century—particularly at the University of British Columbia—produced the extraordinary foliage diversity seen today. Growers should note that the woody crown gradually rises above the soil line with age, eventually reducing vigor; periodic division and replanting corrects this naturally.

Heuchera species were documented among several Indigenous peoples of the American Southwest and Great Plains primarily as astringent plant materials. Ethnobotanical records from the late 19th and early 20th centuries note that roots of related native heucheras were prepared externally for wounds and mouth complaints by specific tribal groups. H. sanguinea itself has a limited formal medicinal record compared to closely related species such as H. americana.

• Navajo (Diné), American Southwest, documented late 19th–early 20th century - root

  Ethnobotanical surveys recorded Navajo use of native Heuchera root material applied externally to wounds and sores, documented by Wyman and Harris in mid-20th century botanical surveys of southwestern flora.

• Eclectic medical tradition, United States, 19th century - root

  Eclectic physicians listed Heuchera americana root as an astringent in the King's American Dispensatory, noting its tannin content; H. sanguinea occupied an adjacent but less prominent position in this literature.

Coral Bells is not considered toxic to humans in ordinary garden contact, though the tannin-rich roots are not a food plant; contact dermatitis is occasionally reported in sensitive individuals after prolonged handling of foliage.

This information is provided for historical and educational purposes only and is not medical advice. Always consult a qualified healthcare professional before making decisions related to your health.