Coral Bells
A versatile perennial grown primarily for its colorful foliage in shades of purple, lime, caramel, and silver with delicate flower sprays.
On this pageOverview
Meet Coral Bells
A versatile perennial grown primarily for its colorful foliage in shades of purple, lime, caramel, and silver with delicate flower sprays. Coral bells thrive in partial shade with well-drained soil and make excellent edging and container plants. Crown rot can occur in heavy, wet soils, so ensure good drainage and mulch to protect the shallow roots.
When to plant Coral Bells
Heuchera can be grown from seed, though named cultivars will not come true. Sow seeds on the surface of moist compost without covering, as they need light for germination. Chill in the refrigerator for 6 weeks before placing in a warm, bright spot at 18-22°C. Germination takes 2-6 weeks and is often erratic. Seedlings are tiny and grow slowly. Division is far more reliable for preserving specific varieties—lift clumps in spring, wash roots, and cut through the woody crown with a sharp knife, ensuring each section has roots and growing points. Replant immediately at the correct depth.
Your Coral Bells Year
Composed for Zone 7 · typical seasons · frost passes Apr 2, returns Nov 1
Sow Coral Bells Mar – Apr, Sep, pick May – Jul. Set your climate below and every date on this plate re-times itself.
How to grow Coral Bells
Coral bells (Heuchera) have undergone a renaissance in recent years, transforming from modest wildflowers into garden superstars thanks to a stunning range of foliage colors. Available in shades of deep purple, burgundy, caramel, peach, lime green, silver, and nearly black, these evergreen to semi-evergreen perennials provide year-round color and interest. The low mounding foliage (20-30cm) is topped by slender 30-60cm stems bearing delicate sprays of tiny bell-shaped flowers.
Plant in partial shade with well-drained soil—heuchera tolerates more sun in cool climates but needs afternoon shade where summers are hot. Good drainage is essential, as the shallow, woody crown is prone to rotting in waterlogged conditions. Set the crown at or slightly above soil level, never buried. A gravel mulch around the crown helps prevent moisture-related rot, which is the number one cause of heuchera loss.
Heuchera crowns naturally push upward out of the soil as they age. Mound fresh compost around exposed crowns each autumn, or divide and replant every 3-4 years to keep plants at the proper depth. Remove faded flower stems and any damaged leaves regularly to maintain a tidy appearance. In cold climates, the evergreen foliage may look tatty by late winter—cut back old leaves just before new growth appears in spring.
18 plants fit a 4 × 8 ft bed
Each Coral Bells wants 35 cm of elbow room. The planner keeps that spacing for you — every plant, every bed.
Coral Bells's best neighbours
Heuchera is one of the most versatile companion plants for shade and part-shade gardens. The colorful foliage creates stunning contrasts with the green leaves of hostas, the silver fronds of Japanese painted ferns, and the bright flowers of astilbe. Use dark purple varieties behind light-colored plants for dramatic backdrop effect, or lime-green varieties to brighten dark plantings. Heuchera makes an excellent edging for shady paths and borders. In containers, it combines beautifully with trailing plants and seasonal flowers.
Hosta belongs beside it.
Old growers' knowledge, checked against Coral Bells's real companion table below — test any plant you're growing.
Feed it well
Heuchera requires well-drained, moderately fertile soil with a neutral to slightly acidic pH of 6.0-7.0. Good drainage is paramount—the shallow crown rots readily in wet conditions. Amend heavy clay with coarse grit and organic matter before planting. A light, loamy soil with good structure is ideal. Feed sparingly in spring with a balanced slow-release fertilizer. Avoid heavy mulching against the crown; instead, use a gravel or grit mulch around the base and organic mulch further from the plant. Container plants need a well-drained potting mix and fortnightly liquid feeds during the growing season.
Ideal Temperature
Hardiness Zone Compatibility
From seed to harvest, stage by stage
Seed Germination
Heuchera seeds are extremely fine, dust-like particles that require light to germinate and should never be covered with soil. Seeds are surface-sown onto moist, finely textured seed-starting mix and typically take 14-21 days to germinate at temperatures between 15-20°C (59-68°F). A period of cold stratification for 4-6 weeks before sowing can significantly improve germination rates.
Seedling Development
Tiny seedlings emerge with minuscule rounded cotyledons followed by the first true leaves, which are small, scalloped, and begin showing hints of their mature coloring. Growth is slow at this stage as the plant develops a delicate root system. Seedlings are vulnerable to damping off and drying out due to their very small size.
Crown Establishment
The young plant begins forming its characteristic woody crown at the soil surface, with a rosette of increasingly larger and more colorful leaves radiating outward. The root system develops into a fibrous network that anchors the crown firmly. Foliage color intensifies as the plant matures, and the leaf texture becomes more ruffled and defined.
Mature Foliage Display
By the end of its first full year, the heuchera forms a lush mound of foliage typically 25-40 cm tall and 30-45 cm wide. Leaves reach their full size of 5-10 cm across and display their mature coloration and patterning. The crown may begin producing offsets, and the plant is now established enough to withstand typical garden conditions including moderate drought.
Flowering Period
In late spring to early summer of their second year and beyond, heuchera send up slender wiry flower stalks 30-60 cm tall, topped with loose panicles of tiny bell-shaped flowers in shades of coral, pink, red, white, or green depending on the cultivar. Flowers bloom for 4-8 weeks and are highly attractive to hummingbirds, bees, and butterflies.
Crown Maturation and Division
After 2-3 years, the woody central crown becomes elevated above the soil surface, a natural process called 'heaving.' The plant may develop a woody, exposed stem below the leaf rosette and can become less vigorous if not addressed. This is the ideal time to divide the crown, which rejuvenates the plant and creates new specimens for the garden.
Mist the soil surface gently to keep it consistently moist without dislodging the tiny seeds. Cover seed trays with clear plastic wrap or a humidity dome to maintain moisture. Provide bright indirect light but avoid direct sun, which can dry out the surface too quickly. Bottom watering is recommended once seedlings emerge.
Caring for Coral Bells month by month
What to do each month for your Coral Bells
July
You are hereNo specific care tasks for this month.
Know exactly what to do in your garden — every month
One email at the start of each month: what to sow, plant, and tackle right now — for your Coral Bells and everything growing around it. Plus a short starter course that helps you dodge the classic mistakes.
- What to do, right now
- Matched to your season
- Starter course included
Harvesting Coral Bells
Heuchera leaves make attractive additions to flower arrangements, providing colorful foliage contrast among cut flowers. Cut individual leaves with long stems from the base of the plant. The delicate flower sprays can also be cut for small arrangements, though they are short-lived in a vase. For craft purposes, heuchera leaves press beautifully, retaining much of their rich color, making them popular for botanical art and pressed flower designs.
assuming you sow when the window opens — set your real date
Pick Coral Bells promptly and the plant keeps producing.
Storage & Preservation
Heuchera is not typically preserved, but the colorful leaves press well for craft projects. Place leaves between sheets of absorbent paper under heavy books for 2-3 weeks. The deep purples and silvers retain color well when pressed. For garden preservation, propagate favorite varieties by division in spring or autumn, or by taking leaf cuttings in late spring—remove a leaf with a small piece of crown attached, dust with rooting hormone, and insert into gritty compost.
What goes wrong — and the fix
Crown Rot
DiseaseMushy, blackened crown where leaves emerge. Foliage wilts and pulls away easily from the rotting base. Most common in wet winters or heavy clay soils.
Vine Weevil
PestNotched leaf edges from adult beetles feeding at night, and root-eating white grubs that cause sudden plant collapse.
Rust
DiseaseSmall rusty-orange pustules on leaf undersides with corresponding yellow spots on upper surfaces. Can cause significant defoliation.
Troubleshooting Common Problems
Crown rot from poor drainage is the number one killer of heuchera. Ensure the crown sits above the surrounding soil surface and water does not pool around it. Heaving from freeze-thaw cycles pushes crowns out of the soil—mound compost over exposed roots in autumn. Older plants become woody and lose vigor; divide every 3-4 years. Dark-leaved varieties may struggle in deep shade, where they lose their rich coloring and become green. Some varieties are more heat-tolerant than others—in hot climates, choose cultivars bred for heat resistance.
Growing Tips
- Plant heuchera in partial to full shade with dappled sunlight for the best foliage color. While some cultivars tolerate morning sun, intense afternoon sun in warm climates causes leaf scorch and faded coloring. Purple and dark-leaved varieties generally handle more sun than lighter-colored ones.
- Ensure excellent drainage at the planting site, as heuchera crowns are highly susceptible to rot in waterlogged soil. Amend heavy clay soils with generous amounts of coarse compost, perlite, or grit before planting to improve drainage around the crown.
- Position the crown exactly at soil level when planting. Crowns set too deeply will rot, while those planted too high will dry out and become unstable. The point where the leaves emerge from the woody stem should sit right at the soil surface.
- Mulch around heuchera plants with 5-8 cm of organic material such as shredded bark or leaf mold, keeping the mulch 2-3 cm away from the crown itself. This maintains soil moisture, moderates temperature, and suppresses weeds without promoting crown rot.
- Check heuchera crowns annually in early spring for frost heaving, which pushes the woody crown above the soil surface during freeze-thaw cycles. Gently press heaved plants back down and mound fresh compost around the exposed stem to encourage new root growth.
- Remove spent flower stalks by cutting them at the base of the crown once blooms fade. This redirects the plant's energy into producing fresh foliage and keeps the mound looking tidy. Leave flower stalks on species types if you wish to collect seed.
- Water heuchera deeply once or twice per week during dry periods rather than giving frequent shallow waterings. The fibrous root system benefits from thorough soaking that encourages deep root growth. Reduce watering in winter when plants are semi-dormant.
- Divide heuchera clumps every 3-4 years in early spring or early autumn to rejuvenate plants and prevent the woody crown from becoming too elevated. Lift the entire clump, cut it into sections with a sharp knife, and replant divisions at the correct depth with fresh compost.
- Monitor for vine weevil, the most serious pest of heuchera. Adult weevils create characteristic semicircular notches along leaf edges at night, while their larvae feed destructively on roots below soil level. Apply biological nematode controls in late summer to target larvae in the soil.
- Select cultivars based on your specific growing conditions. For deep shade, choose lime-green or silver-leaved varieties that brighten dark areas. For sunnier positions, darker-leaved cultivars like 'Palace Purple' or 'Obsidian' tolerate more light and develop their richest coloring with some direct sun exposure.
Pick your Coral Bells
Heuchera 'Palace Purple'
The classic deep purple-bronze variety that started the heuchera revolution, with metallic leaves that darken to near-black in full sun.
Heuchera 'Caramel'
Stunning warm apricot-caramel foliage that glows in the shade garden, tolerates heat and humidity better than many purple varieties.
Heuchera 'Lime Rickey'
Bright chartreuse-lime leaves that illuminate dark corners, with white flowers that complement the vivid foliage beautifully.
Heuchera 'Obsidian'
The darkest heuchera, with glossy near-black foliage that holds its color all season without fading, even in part shade.
A single heuchera plant purchased for $8-15 can be divided into 4-8 new plants every 3-4 years, making it one of the most cost-effective perennials for filling garden beds. Over a decade, one original plant can yield 30 or more divisions worth $240-450 at retail prices. Since heuchera provides year-round foliage interest in challenging shade conditions where few other colorful plants thrive, it also eliminates the need for seasonal annual replacements that typically cost $3-5 per plant multiple times per year.
Quick recipes
Heuchera Crown Division and Replanting
30 minutesA practical garden recipe for rejuvenating mature heuchera plants and multiplying your collection for free. Division keeps plants vigorous and prevents the woody crown from becoming elevated above the soil, which reduces their lifespan and ornamental value. Best performed in early spring as new growth emerges or in early autumn while roots are still actively growing.
6 ingredientsShade Container Arrangement with Heuchera
45 minutesCreate a stunning, long-lasting container display featuring heuchera as the star foliage plant paired with complementary shade-loving companions. This arrangement provides multi-season interest and thrives on a shaded porch, patio, or north-facing entrance. The heuchera will anchor the display from spring through late autumn with its colorful, evergreen foliage.
6 ingredientsHeuchera Leaf Propagation Method
20 minutesAn easy propagation technique that allows you to create new heuchera plants from individual leaves taken from prized cultivars. This method is slower than crown division but allows you to multiply a single plant without disturbing it. Leaf cuttings root best when taken in late spring or early summer during active growth, and new plantlets typically develop within 6-8 weeks.
6 ingredientsWhat's inside
Health Benefits
- Heuchera root contains high levels of tannins with strong astringent properties, traditionally used by Native American tribes to treat diarrhea, dysentery, and other gastrointestinal complaints
- Root preparations have documented antimicrobial activity and were historically applied as poultices to wounds, sores, and skin ulcerations to promote healing and prevent infection
- Traditional herbal medicine employed heuchera root gargle as an effective remedy for sore throats, mouth ulcers, and gum inflammation due to its powerful astringent and anti-inflammatory compounds
- The presence of heuchera in gardens supports mental health and well-being through biophilic benefits, as studies consistently show that tending ornamental gardens reduces stress, anxiety, and cortisol levels
- Heuchera flowers provide essential nectar resources for hummingbirds and native pollinators, supporting biodiversity that contributes to broader ecosystem health and environmental well-being in residential areas
- Growing heuchera in shade gardens encourages outdoor activity in cooler garden microclimates during hot summer months, promoting physical health benefits associated with regular gardening exercise
Where Coral Bells comes from
Heuchera, commonly known as coral bells or alumroot, is a genus of perennial plants native exclusively to North America. The genus encompasses approximately 37 species distributed across a remarkably diverse range of habitats, from alpine rock crevices in the Rocky Mountains to moist woodland floors in the Appalachian region and dry canyon walls in the Desert Southwest. Indigenous peoples across North America recognized the medicinal properties of heuchera long before European contact. The Blackfoot, Cherokee, and other tribes used root preparations as powerful astringents for treating diarrhea, sore throats, wounds, and liver ailments. The common name 'alumroot' reflects the strongly astringent, alum-like taste of the roots, which contain high concentrations of tannins. European botanists first formally described the genus in the early 18th century, naming it after Johann Heinrich von Heucher, a German professor of medicine, though the honor was somewhat incidental as Heucher had no direct involvement with the plant. Throughout the 19th and early 20th centuries, heuchera remained a relatively minor garden plant, appreciated primarily for its delicate coral-red flowers rather than its foliage. The transformation of heuchera into one of the most popular shade perennials in the world began in the 1980s and 1990s, driven largely by the work of American breeder Dan Heims of Terra Nova Nurseries in Oregon. Heims and his team began crossing various North American species and selecting for extraordinary foliage colors, patterns, and textures that had never been seen in garden plants. This breeding revolution introduced cultivars with leaves in shades of purple, silver, amber, chartreuse, and near-black, transforming heuchera from a modest wildflower into a foliage superstar. Today, heuchera ranks among the top-selling perennials worldwide, with hundreds of named cultivars available and new introductions appearing annually.
Coral Bells: did you know?
Fascinating facts about Coral Bells
Heuchera is named after Johann Heinrich von Heucher (1677-1747), a German botanist and physician who was a professor of medicine at the University of Wittenberg, though he never actually studied the plant that bears his name.
Coral Bells questions, answered
When should I plant Coral Bells?
What are good companion plants for Coral Bells?
What hardiness zones can Coral Bells grow in?
How much sun does Coral Bells need?
How far apart should I space Coral Bells?
What pests and diseases affect Coral Bells?
How do I store Coral Bells after harvest?
What are the best Coral Bells varieties to grow?
What soil does Coral Bells need?
Why is my heuchera crown rising out of the soil?
What is killing my heuchera plants in containers?
Do heuchera plants need sun or shade?
How do I propagate heuchera from cuttings?
Why are the leaves on my heuchera turning brown and crispy?
Are heuchera deer resistant?
You just read the theory. Now grow it on autopilot.
Everything that makes Coral Bells fiddly — the timing, the spacing, the companions, the harvest window — is exactly what PlotMyGarden handles for you, for every plant in your garden.
A plan that knows your weather
Set your location once. Get sow, feed and harvest dates built around your real last-frost date and live forecast — no more guessing from a generic seed packet.
From the “When to plant” sectionDrag-and-drop bed planner
Design beds on a grid. Every plant snaps to its proper spacing, and you can see your whole season laid out before you spend a cent on seed.
From the “Growing guide” sectionCompanion conflicts, caught early
200+ good-and-bad pairings checked live as you plant — so a season-wrecking mistake never makes it into the ground.
From the “Companions” sectionReminders you'll actually act on
“Water the beans.” “Pick today before it turns.” Timely, specific, and tied to the plants you're really growing.
From the “Harvest” sectionSuccession, scheduled
Want a harvest for six weeks, not six days? It spaces your sowings automatically and reminds you when each new block is due.
From the “When to plant” sectionA record that gets smarter
Every harvest you log teaches it your garden. Next year's plan starts from what actually worked in your soil, not a textbook's.
From the “Overview” sectionPlant these alongside Coral Bells
More Perennials
Grow your best Coral Bells yet — and everything around it.
Start a free plan today. Lay out your beds, drop in your Coral Bells, and let PlotMyGarden handle the timing, spacing, companions and reminders from seed to harvest basket.