Coral Bells Cherry Cola Plant
The coral bells cherry cola plant is a breathtaking perennial prized for its rich burgundy-chocolate foliage and delicate cream-colored blooms. This low-maintenance Heuchera variety thrives in partial shade and adds year-round color to gardens, containers, and borders.
If you are looking for a plant that brings drama to the shade garden without demanding constant attention, the coral bells cherry cola plant might just become your new favorite. This stunning Heuchera cultivar offers something rare in the plant world: foliage so rich and colorful it rivals any flower, combined with an easygoing nature that makes it perfect for busy gardeners. I first discovered this beauty at a local nursery three years ago, and it has since become a staple in my own shade borders.
The coral bells cherry cola plant belongs to the Heuchera family, commonly known as coral bells or alumroot. What sets this particular variety apart is its extraordinary leaf color. Imagine the deep, luxurious hue of cherry cola soda captured in foliage form. The leaves emerge in spring with bright cherry-red tones that deepen to a rich chocolate-burgundy as the season progresses. This color transformation keeps the garden interesting from April through November in most climates.
Key Takeaways
- Stunning Foliage: The coral bells cherry cola plant features unique cherry-red to chocolate-brown leaves that provide year-round visual interest.
- Shade Tolerant: This perennial thrives in partial to full shade, making it perfect for woodland gardens and shady borders.
- Low Maintenance: Once established, the coral bells cherry cola plant requires minimal care and is relatively drought tolerant.
- Versatile Uses: Works beautifully in containers, rock gardens, border edges, and as ground cover beneath trees.
- Attracts Pollinators: The delicate bell-shaped flowers attract hummingbirds and butterflies during late spring to early summer.
- Cold Hardy: Suitable for USDA zones 4-9, this plant withstands freezing temperatures with proper winter care.
- Deer Resistant: The coral bells cherry cola plant is rarely browsed by deer, making it ideal for rural gardens.
Quick Answers to Common Questions
What makes the coral bells cherry cola plant unique?
The coral bells cherry cola plant stands out for its extraordinary foliage that shifts from bright cherry-red in spring to rich chocolate-burgundy in summer, providing year-round color in shade gardens where flowers are scarce.
How much sun does a coral bells cherry cola plant need?
The coral bells cherry cola plant thrives in partial shade with morning sun and afternoon shade. In cooler climates it tolerates more sun, while hot regions require protection from intense afternoon rays to prevent leaf scorch.
Is the coral bells cherry cola plant deer resistant?
Yes, the coral bells cherry cola plant is highly deer resistant due to astringent compounds in its foliage. Deer and rabbits typically avoid it, making it an excellent choice for gardens in areas with high wildlife pressure.
When should I divide my coral bells cherry cola plant?
Divide the coral bells cherry cola plant every 3-4 years in early spring when new growth emerges. This rejuvenates the clump, prevents center die-out, and provides free plants for expanding your garden or sharing.
Can coral bells cherry cola plant grow in containers?
Absolutely. The coral bells cherry cola plant excels in containers with good drainage, quality potting mix, and regular watering. It makes a stunning focal point in shade container combinations and can be overwintered in protected locations.
📑 Table of Contents
- Getting to Know the Coral Bells Cherry Cola Plant
- Ideal Growing Conditions for Success
- Planting and Establishment
- Ongoing Care and Maintenance
- Design Ideas and Companion Plants
- Common Problems and Solutions
- Propagation Methods
- Seasonal Interest Throughout the Year
- Buying Guide and Selection Tips
- Frequently Asked Questions About Care
Getting to Know the Coral Bells Cherry Cola Plant
Botanical Background and Origins
The coral bells cherry cola plant is a hybrid cultivar of Heuchera, a genus native to North America. Plant breeders developed this variety by crossing several native species to achieve its remarkable coloration and improved garden performance. The breeding work focused on creating a plant that could handle heat and humidity better than older varieties while maintaining that coveted deep foliage color.
Heuchera species naturally grow in woodland settings, rocky outcrops, and alpine meadows across the continent. This heritage explains why the coral bells cherry cola plant prefers dappled shade and well-drained soil. The genus name honors Johann Heinrich von Heucher, an 18th-century German physician and botanist. The common name “coral bells” comes from the tiny bell-shaped flowers that appear on slender stems above the foliage.
Physical Characteristics
Let me paint a picture of what you can expect. The coral bells cherry cola plant forms a neat, mounding clump typically reaching 10 to 14 inches tall and 12 to 18 inches wide. The leaves are the real showstopper. Each leaf measures 3 to 5 inches across with a gently lobed, almost maple-like shape. The texture is slightly ruffled with a subtle sheen that catches light beautifully.
In spring, new growth emerges in vivid cherry-red shades that practically glow in the shade garden. As summer heat arrives, the color deepens to a sophisticated burgundy-chocolate tone. The undersides of the leaves often show a contrasting deep purple-red, adding dimension when breezes flip the foliage. Come fall, the color often intensifies further, providing late-season interest when many perennials have faded.
The flowers appear in late spring to early summer on wiry stems rising 18 to 24 inches above the foliage. They are small, cream to pale pink bells arranged in airy panicles. While not as showy as the foliage, they add a delicate, fairy-like quality and attract hummingbirds. Many gardeners remove the flower stems to keep focus on the leaves, but I leave mine for the pollinators.
Ideal Growing Conditions for Success
Light Requirements
The coral bells cherry cola plant performs best in partial shade. This means morning sun with afternoon shade, or dappled light filtering through tree canopies all day. In cooler northern climates (zones 4-5), it can tolerate more sun, even full sun if soil moisture is consistent. In hot southern regions (zones 8-9), afternoon shade is essential to prevent leaf scorch and color fading.
I have found that the richest foliage color develops with about 4 hours of morning sun. Too much shade leads to greener leaves with less intense burgundy tones. Too much sun, especially hot afternoon sun, causes bleaching and crispy leaf edges. If you are unsure, start with a spot that gets gentle morning light and watch how the plant responds.
Soil Preferences
Well-drained soil is non-negotiable for the coral bells cherry cola plant. These plants hate wet feet, especially in winter. Heavy clay soil should be amended generously with compost, leaf mold, or coarse sand to improve drainage. The ideal soil is rich in organic matter, slightly acidic to neutral (pH 6.0-7.0), and moisture-retentive yet free-draining.
Before planting, work 2 to 3 inches of compost into the top 8 to 10 inches of soil. This improves both drainage and moisture retention while providing slow-release nutrients. If your soil is extremely alkaline, incorporate some peat moss or elemental sulfur to lower the pH slightly. A soil test from your local extension office takes the guesswork out of amendments.
Water Needs
Consistent moisture keeps the coral bells cherry cola plant looking its best, but established plants show surprising drought tolerance. Water deeply once or twice a week during the first growing season to encourage deep root development. After establishment, water when the top inch of soil feels dry. Mulch with 2 inches of shredded bark or leaf mold to conserve moisture and keep roots cool.
Be careful not to overwater. Soggy soil leads to crown rot, the number one killer of Heuchera. Water at the base of the plant rather than overhead to keep foliage dry and reduce fungal issues. In containers, check daily during hot weather as pots dry out faster than garden beds.
Temperature and Hardiness
The coral bells cherry cola plant is reliably hardy in USDA zones 4 through 9. In zone 4, provide winter protection with a thick mulch layer after the ground freezes. In zones 8-9, the plant may stay evergreen through mild winters. Extreme heat combined with humidity can stress the plant, so ensure good air circulation in southern gardens.
Spring frost can damage emerging foliage. If a late freeze threatens after leaves have unfurled, cover plants with a frost cloth or inverted pots overnight. The plant usually recovers quickly from minor frost damage, pushing fresh growth from the crown.
Planting and Establishment
When to Plant
Spring and early fall are the best times to plant the coral bells cherry cola plant. Spring planting gives roots time to establish before summer heat. Fall planting works well in zones 6-9, allowing roots to grow during cool weather before winter dormancy. Avoid planting during summer heat or when the ground is frozen.
If you buy plants in summer, keep them in a shaded spot and water daily until cooler weather arrives for planting. Nursery pots heat up quickly and dry out fast. I once lost a beautiful specimen by leaving it in its pot too long during a July heat wave. Learn from my mistake.
Spacing and Planting Technique
Space plants 14 to 18 inches apart to allow for mature spread and good air circulation. Crowded plants are more prone to fungal diseases. Dig a hole twice as wide as the root ball but no deeper. The crown (where stems meet roots) should sit at or slightly above soil level. Planting too deep invites crown rot.
Gently loosen circling roots before placing the plant in the hole. Backfill with amended soil, firming gently to eliminate air pockets. Water thoroughly to settle soil around roots. Apply a 2-inch mulch layer, keeping it pulled back slightly from the crown. Label the plant so you remember the variety name for future reference.
Container Growing
The coral bells cherry cola plant excels in containers, where its foliage can be appreciated up close. Choose a pot at least 12 inches wide and deep with drainage holes. Use a high-quality potting mix blended with 20% compost or worm castings. Avoid garden soil in pots as it compacts and drains poorly.
Container plants need more frequent watering and fertilizing than in-ground plants. Check moisture daily in summer. Feed monthly with a balanced liquid fertilizer diluted to half strength. In winter, move pots to a protected location like an unheated garage in cold zones, or group them against a sheltered wall and mulch heavily.
Ongoing Care and Maintenance
Fertilizing Schedule
The coral bells cherry cola plant is not a heavy feeder. A single application of slow-release granular fertilizer in early spring is usually sufficient. Choose a balanced formula like 10-10-10 or one slightly higher in phosphorus to support root health. Scatter granules around the drip line, not against the crown, and water in well.
Alternatively, top-dress with 1 inch of compost each spring. This feeds the soil microbiome which in turn feeds the plant. Avoid high-nitrogen fertilizers which promote lush green growth at the expense of the signature burgundy color. If leaves look pale or growth seems stunted despite good conditions, a soil test can reveal specific deficiencies.
Pruning and Grooming
Minimal pruning keeps the coral bells cherry cola plant tidy. Remove any winter-damaged or dead leaves in early spring before new growth emerges. Use clean, sharp scissors and cut at the base of the leaf stem. Throughout the growing season, snip off any leaves that become tattered or discolored.
After flowering, you can remove spent flower stems at the base to redirect energy to foliage. Some gardeners shear the entire plant back by half in midsummer if it looks ragged, which prompts fresh new growth. I prefer selective leaf removal to maintain the natural mound shape.
Dividing Established Clumps
Every 3 to 4 years, the coral bells cherry cola plant benefits from division. The center of the clump becomes woody and less vigorous, with fewer leaves. Spring is the ideal time, just as new growth appears. Dig up the entire clump and gently pull or cut apart into sections, each with healthy roots and several growth points.
Discard the woody center. Replant divisions at the same depth, spacing them appropriately. Water well and mulch. Divisions may look a bit sad for a few weeks but recover quickly. This is also how you propagate more plants for free. Share divisions with gardening friends or expand your own shade beds.
Winter Care
In zones 4-6, apply a protective mulch layer after the ground freezes in late fall. Use straw, pine needles, or shredded leaves 3 to 4 inches deep. This prevents freeze-thaw cycles that can heave the shallow crowns out of the soil. Remove mulch gradually in early spring as temperatures moderate.
Do not cut back foliage in fall. The leaves protect the crown through winter. In mild climates where the plant stays evergreen, simply clean up any winter-damaged leaves in spring. Avoid heavy, wet mulches like whole leaves that can mat down and smother the crown.
Design Ideas and Companion Plants
Shade Garden Combinations
The coral bells cherry cola plant plays beautifully with other shade lovers. Its deep burgundy foliage creates stunning contrast against chartreuse, silver, or variegated leaves. Try pairing it with Japanese forest grass (Hakonechloa macra ‘Aureola’) for a flowing gold-and-burgundy river. The grass’s arching habit softens the coral bells’ mounded form.
Hostas make classic companions. Choose blue-leaved varieties like ‘Halcyon’ or ‘Blue Angel’ for cool contrast, or gold varieties like ‘Sum and Substance’ for warm harmony. Ferns add delicate texture. Japanese painted fern (Athyrium niponicum ‘Pictum’) with its silver and burgundy fronds echoes the coral bells’ colors perfectly.
For spring blooms, underplant with ephemerals like Virginia bluebells (Mertensia virginica) or wood anemone (Anemone nemorosa). They flower before the coral bells cherry cola plant hits its stride, then go dormant as its foliage expands. This layering maximizes seasonal interest in the same square footage.
Container Recipes
In pots, the coral bells cherry cola plant serves as a magnificent “filler” plant. Combine it with a tall “thriller” like a dwarf Japanese maple or a columnar boxwood. Add trailing “spillers” such as creeping jenny (Lysimachia nummularia ‘Aurea’) or variegated ivy. The burgundy foliage anchors the combination and ties everything together.
For a monochromatic sophisticated look, pair with other burgundy-leaved plants like sweet potato vine ‘Blackie’ or coleus ‘Dark Star’. Add white-flowering annuals like bacopa or lobelia for crisp contrast. In fall, swap summer annuals for ornamental kale, pansies, and small pumpkins for a seasonal display.
Border and Edging Uses
The coral bells cherry cola plant makes a fantastic edging plant along shaded pathways or border fronts. Its consistent height and neat habit create a tidy line without needing shearing. Plant in groups of 3, 5, or 7 for naturalistic drifts. Space them so mature plants will barely touch, creating a continuous ribbon of color.
Use it to hide the bare legs of taller shrubs like hydrangeas or rhododendrons. The mounded foliage fills in the gap at ground level. It also works well around tree bases where grass struggles, forming a living mulch that suppresses weeds and protects tree roots from mower damage.
Common Problems and Solutions
Pest Issues
The coral bells cherry cola plant is remarkably pest-resistant. Deer and rabbits typically avoid it due to the astringent compounds in the leaves. Slugs and snails may occasionally sample tender new growth in spring. Hand-pick at night or use iron phosphate bait if damage is significant. Diatomaceous earth around plants creates a barrier.
Black vine weevil larvae can feed on roots, causing wilting and decline. Adults notch leaf edges at night. Beneficial nematodes applied to soil in spring and fall control larvae effectively. Inspect new plants carefully before introducing them to your garden to avoid importing pests.
Foliar nematodes applied to soil in spring and fall control larvae effectively. Inspect new plants carefully before introducing them to your garden to avoid importing pests.
Disease Concerns
Crown rot is the primary disease threat, caused by soilborne fungi in poorly drained conditions. Prevention through proper planting and watering is far easier than treatment. If a plant suddenly wilts despite moist soil, crown rot is likely. Dig it up, trim away rotted tissue, dust with fungicide, and replant in a better-drained location.
Powdery mildew appears as white dusty coating on leaves during humid weather with poor air circulation. Space plants properly, water at soil level, and thin surrounding vegetation to improve airflow. Remove severely affected leaves. Horticultural oil or potassium bicarbonate sprays can help if caught early.
Rust shows as orange pustules on leaf undersides. It is more common in humid climates. Remove infected leaves promptly. Avoid overhead watering. Copper-based fungicides applied preventively in spring can reduce outbreaks in prone areas.
Environmental Stress
Leaf scorch appears as brown, crispy edges, usually from too much sun or insufficient water. Relocate to a shadier spot or increase watering. Sunscald on winter foliage happens when frozen leaves thaw rapidly in morning sun. Winter mulch and anti-desiccant sprays help in exposed locations.
Frost heaving pushes plants out of the ground during freeze-thaw cycles. The crown becomes exposed and desiccates. This is why post-freeze mulch is critical in cold zones. If you notice heaving, gently press plants back into soil when thawed, or add soil around exposed crowns.
Color fading to green indicates insufficient light for anthocyanin production. While the plant survives in deep shade, the signature cherry cola color diminishes. If possible, limb up nearby trees to allow more dappled light, or move to a brighter location in early spring or fall.
Propagation Methods
Division
As mentioned earlier, division is the easiest and most reliable propagation method for the coral bells cherry cola plant. It produces mature plants quickly and maintains the exact characteristics of the parent. Spring division aligns with natural growth cycles. Fall division works in mild climates but risks winter loss in cold zones.
To divide, dig the entire clump in early spring. Wash or shake off soil to see the structure. Pull apart natural divisions or use a sharp knife to cut through the woody crown. Each division needs 3-5 healthy shoots with attached roots. Trim any damaged roots. Replant immediately at the same depth.
Leaf Cuttings
Leaf cuttings offer another way to increase your stock, though they take longer to reach mature size. In late spring to early summer, select healthy mature leaves with a portion of the petiole (leaf stem). Dip the cut end in rooting hormone. Insert into moist sterile potting mix, burying the petiole up to the leaf blade.
Cover with a clear plastic bag to maintain humidity. Place in bright indirect light. Roots and a tiny plantlet form at the base in 4-8 weeks. Once well-rooted, harden off and pot up individually. This method produces many plants from one leaf but requires patience.
Seed Propagation
Growing the coral bells cherry cola plant from seed is possible but seedlings will not come true to the parent. Heuchera hybrids produce variable offspring. You might get interesting new color variations, but not the reliable cherry cola hue. If you want to experiment, collect seeds when capsules turn brown and split.
Sow fresh seeds on the surface of moist seed-starting mix. Do not cover; they need light to germinate. Keep at 65-70°F with high humidity. Germination takes 2-8 weeks. Transplant seedlings to individual pots when they have true leaves. Grow on for a year before planting out.
Seasonal Interest Throughout the Year
Spring Awakening
Early spring brings the most dramatic color from the coral bells cherry cola plant. New leaves unfurl in brilliant cherry-red, glowing like jewels in the awakening garden. This is when the plant makes its boldest statement. Pair with early bulbs like species tulips or daffodils for a spectacular spring vignette.
Watch for flower stems emerging in late spring. The buds form along wiry stems, opening sequentially from bottom to top. The airy panicles dance above the foliage in gentle breezes. Hummingbirds visit regularly. This floral display lasts 3-4 weeks, bridging spring and summer.
Summer Sophistication
As temperatures rise, the foliage deepens to rich chocolate-burgundy. This sophisticated tone provides a calm anchor amidst summer’s floral exuberance. The mounded habit remains neat without flopping. In hot climates, some afternoon leaf curling is normal and reverses overnight.
Summer is the time to ensure consistent moisture. Mulch moderates soil temperature and retains water. Remove any flower stems if you prefer a purely foliar display. I leave mine for the pollinators but understand the aesthetic choice either way.
Fall Finale
Autumn often brings a final color intensification. Cooler nights trigger increased anthocyanin production, deepening the burgundy to near-black in some lights. The coral bells cherry cola plant becomes a star of the fall shade garden alongside Japanese maples and burning bushes.
This is also division season in mild climates. The plant’s energy shifts to root growth, making it an ideal time to multiply your stock. Fall-planted divisions establish roots before winter, giving them a head start next spring.
Winter Structure
In zones 6-9, the coral bells cherry cola plant remains evergreen, providing precious winter color. The ruffled leaves catch frost beautifully, creating crystalline sculptures on cold mornings. In colder zones, foliage may die back but the crown survives underground.
Do not cut back in fall. The leaves protect the crown. If heavy snow flattens the plant, it springs back when melted. Winter is the season to plan next year’s combinations and order any new companion plants.
Buying Guide and Selection Tips
Where to Purchase
Local independent nurseries often carry the coral bells cherry cola plant in spring and fall. They can advise on varieties that perform well in your specific area. Staff usually have firsthand growing experience. Plus, you support local business and reduce shipping stress on plants.
Online specialty perennial nurseries offer wider selection and ship at proper planting times. Look for nurseries with good reviews, clear guarantees, and climate-appropriate shipping schedules. Avoid big-box store plants that may have been stressed by improper care or wrong climate staging.
Plant swaps and garden club sales are treasure troves for divisions from established local gardens. These plants are already adapted to your conditions. Gardeners love sharing favorites. Bring something to trade and you’ll go home with new treasures.
Selecting Healthy Plants
Choose plants with vibrant, undamaged foliage in the characteristic cherry-burgundy color. Avoid plants with yellowing leaves, brown crispy edges, or signs of pests. Check the crown area for firmness, not mushy or foul-smelling tissue which indicates rot.
Gently lift the pot to inspect roots. They should be white or light tan, firm, and filling the pot without being severely rootbound. A few roots circling the bottom are fine. Avoid plants with dark, mushy, or sparse roots. Smaller, younger plants often establish faster than large, rootbound specimens.
Verify the label reads “Cherry Cola” or “Cherry Cola Coral Bells” to ensure you get the correct cultivar. Heuchera varieties can look similar in pots. Reputable nurseries use proper botanical labels with patent numbers for trademarked varieties.
Understanding Patents and Trademarks
The coral bells cherry cola plant may be sold under a patented or trademarked name. This means the breeder holds propagation rights. Home gardeners can divide for personal use but cannot sell propagated plants. Respecting plant patents supports continued breeding innovation.
You may see it marketed as part of a series like the “Soda” series which includes ‘Cherry Cola’, ‘Ginger Ale’, and ‘Root Beer’. These share similar breeding lines and cultural needs but offer different color palettes. Collecting the series creates a cohesive theme garden.
Frequently Asked Questions About Care
Why are my coral bells cherry cola plant leaves turning green?
Insufficient light is the most common cause. The deep burgundy pigment (anthocyanin) requires some direct or bright indirect light to develop fully. In deep shade, leaves revert to green to maximize photosynthesis. Move to a brighter location or limb up overhead branches.
Can I grow coral bells cherry cola plant indoors?
It is possible but challenging. The plant needs a cool dormant period and high humidity. Indoors, provide bright indirect light, consistent moisture, and good air circulation. It may not achieve the same color intensity as outdoors. Better as a seasonal patio plant brought inside only for extreme cold.
How fast does the coral bells cherry cola plant grow?
Moderate pace. A spring-planted division reaches near-mature size by fall. Full mature clump size takes 2-3 years. Growth rate depends on soil, light, moisture, and climate. Rich soil with consistent moisture and morning sun produces the fastest growth.
Is the coral bells cherry cola plant toxic to pets?
Heuchera species are generally considered non-toxic to dogs and cats. However, any plant material can cause mild gastrointestinal upset if consumed in large quantities. The astringent taste usually deters pets from eating more than a nibble. Monitor pets and consult a vet if concerned.
Should I deadhead the flowers?
Personal preference. Removing spent flower stems keeps the plant looking tidy and may redirect energy to foliage growth. Leaving them provides nectar for pollinators and adds vertical interest. If you deadhead, cut stems at the base when blooms fade.
Can I plant coral bells cherry cola plant under black walnut trees?
Yes! Heuchera is one of the few perennials tolerant of juglone, the allelopathic compound produced by black walnut roots. The coral bells cherry cola plant thrives in the dry shade beneath these trees where little else grows. A perfect solution for a difficult spot.
The coral bells cherry cola plant has earned its place in my garden and countless others for good reason. It delivers months of sophisticated color with minimal fuss, thrives in the challenging shade conditions that frustrate many gardeners, and plays well with a huge palette of companion plants. Whether you tuck a single specimen into a container, line a woodland path with a drifting ribbon, or mass it as ground cover beneath trees, this perennial delivers.
Start with one plant in a spot that gets morning light and has decent drainage. Watch it through the seasons. Notice how the color shifts from bright cherry to deep chocolate. Observe the hummingbirds visiting the delicate blooms. See how it anchors a combination or softens a hardscape edge. I suspect you will find yourself planning where to add more, just as I did.
Gardening is about finding plants that give back more than they ask. The coral bells cherry cola plant is exactly that kind of plant. It asks for shade, drainage, and occasional water. It gives back year-round beauty, pollinator support, deer resistance, and the quiet satisfaction of a garden that looks designed rather than default. That is a trade I will make every time.
Frequently Asked Questions
What are the ideal growing zones for coral bells cherry cola plant?
The coral bells cherry cola plant thrives in USDA hardiness zones 4-9. In zone 4, provide winter mulch protection. In zones 8-9, ensure afternoon shade and consistent moisture to prevent heat stress.
How often should I water coral bells cherry cola plant?
Water deeply once or twice weekly during the first growing season. Established plants need water when the top inch of soil feels dry. Container plants may need daily watering in hot weather. Always avoid soggy soil.
What soil amendments help coral bells cherry cola plant thrive?
Amend heavy clay with compost, leaf mold, or coarse sand for drainage. The coral bells cherry cola plant prefers slightly acidic to neutral soil (pH 6.0-7.0) rich in organic matter. Annual compost top-dressing maintains soil health.
Why is my coral bells cherry cola plant losing color?
Color fading usually indicates too much shade or excessive nitrogen fertilizer. The coral bells cherry cola plant needs some morning light for rich pigmentation. Avoid high-nitrogen fertilizers which promote green growth over burgundy color.
Does coral bells cherry cola plant attract pollinators?
Yes, the delicate bell-shaped flowers of the coral bells cherry cola plant attract hummingbirds, butterflies, and native bees in late spring to early summer. The airy flower panicles provide nectar for several weeks.