Traditional perennial foliage plants like coral bells come in hundreds of kinds, and new ones are always being introduced. The plants, which are native to North America, grow as little bell-shaped mounds with a woody rootstock or crown at their base in spring or early summer. The nectar-rich blossoms also make lovely cut blooms and draw hummingbirds and butterflies. Depending on the environment, they have spherical, lobed, hairy, evergreen or semi-evergreen leaves. New types of coral bells feature leaves in addition to the conventional green colour, like purple, rose, lime green, gold, and more. Coral bells are a fantastic choice for woodlands, rock gardens, pots, borders, and ground covers since they grow at a slow rate and do best when planted in late fall or early spring.
Coral bells look spectacular when planted in clusters and make excellent edging plants. Their foliage is vivid and rich, which is ideal for enhancing the hues of neighbouring garden flowers. While butterscotch-colored leaves can highlight the tones of straightforward green foliage, darker purple leaves can make yellow blossoms gleam.
Coral bells plants are rather simple to take care of, so you probably won’t need to make any major changes or get your garden ready in any significant way before they arrive. It’s good news if your landscape is full of large shade trees because they prefer moderate moisture and will thrive in partial shadow.
Partial shade is ideal for coral bells, especially in hotter regions. If stored in direct sunlight, their colour may become washed out, and too much light may cause the leaves to sear. Remember that coral bells planted in wet shade may be susceptible to fungus It’s better to relocate your plants to a drier place if they start to have issues.
Coral bells favour humus-rich soils that range in pH from 6.0 to 7.0, which is neutral to slightly acidic. The crown of the plant will rot if it remains in damp soil, which is especially true in shaded regions.
This plant prefers dependably moist soil and has moderate water requirements. Established plants can withstand some drought, but the best method to keep them content is with an inch of water every week. Plan to give your coral bells extra water if you grow them in the sun. On hot, bright days, their shallow roots will need more moisture.
Although the specific hardiness can vary depending on the kind you’re growing, the majority of coral bells are hardy in USDA hardiness zones 4–8. Coral bells’ crowns can rise beyond the soil line in the winter in colder climates. The cycle of freezing and thawing that forces the plants upward can be avoided by winter mulching, and you should routinely check to make sure the roots are not exposed.
Feed coral bells in the spring with a thin layer of slow-release fertiliser or a half-inch layer of compost. Light feeding is all that this plant requires; excessive applications of quick-release fertilisers should be avoided since they will prevent flowering. To replace nutrients that have been lost from the soil, coral bells grown in containers benefit from fertilisation with a water-soluble fertiliser.
Coral bells don’t require much upkeep, but you can prune off the entire flower stem after it blooms to direct the plant’s energy into developing additional leaves. Coral bells are annuals that don’t live very long, therefore to maintain their health you need divide the plants every three to five years in the early spring or fall. After winter, if the leaves start to appear a little ragged, trim them back and new growth should rapidly take over.
In the late summer or early fall, the larvae of the black vine weevil can burrow into coral bells’ crowns and roots, causing the plants to wilt and droop. The larvae on the plant should be visible so that you can manually remove and annihilate them. Use neem oil or a light insecticide to treat your plants if the infection doesn’t go away.
Why aren’t my coral bells growing well?
Coral bells’ shallow roots require moisture, but too much moisture can cause illnesses like stem and crown rot, especially while the plant is dormant in the winter.
How are coral bells cared for?
Although coral bell plants prefer some shade, they may tolerate greater sunlight in colder climates. Give them neutral to slightly acidic soil with a pH of 6.0 to 7.0 that is well-drained, wet, and rich. Some species, like H. sanguinea, cannot grow on soils that are acidic or clayey. Heucheras don’t need much care, other than regular watering during their first year of growth.
Heuchera clumps should be divided as needed or every three to four years. To encourage more blooms, which may last into the summer, deadhead the flowers. Simply trim the stalks after the flowers have completed blooming to encourage the plant to focus more energy on leaf development. If you’d like, trim the foliage back in the early spring so that there won’t be too much new growth.
Problems
These deer-resistant beauties are rarely bothered by pests or illnesses, but coral bells can suffer from leaf scorch in hot, direct sunlight. When the weather changes, keep an eye out for soil heave. This occurs when the ground freezes and thaws, eventually forcing roots up out of the ground. Keeping the plants thoroughly mulched can aid in avoiding this.
Quick Tips for Growing Coral Bells:
- Plant in some shade because scorching sunlight might damage the leaves.
- To prevent roots from being exposed as soil shifts seasonally, mulch well.
- In the fall, trim flower stalks to focus energy on the leaves.
What type of fertiliser is required for coral bells?
Use a slow-release 5-10-5 or 12-6-6 fertiliser combination that is water-soluble or granular. The percentages in the numbers represent the nitrogen, phosphorus, and potassium content of the fertiliser. Additionally, you can amend the soil with organic additives like bone meal and alfalfa meal. Compost topdressing is another alternative. These supplements will securely feed your coral bells by gradually releasing nutrients into the soil.
Throughout the growing season, potted Coral Bells will require feeding, and a water-soluble fertiliser can boost the plant’s nutrition.
Do coral bells need to be watered?
Established plants can withstand some drought, but the best method to keep them content is with an inch of water every week. Plan to give your coral bells extra water if you grow them in the sun. On hot, bright days, their shallow roots will need more moisture.
How do coffee grounds taste to coral bells?
Examples of plants you SHOULD NOT use coffee grounds on are as follows: trees: Austrian Pine, Burr Oak, Green Ash, and Silver Maple. Lilac, boxwood, oleander, barberry, and juniper are some shrubs. Geranium, clematis, coral bells, salvia, and sweet pea are perennial plants.
What causes coral bells’ leaves to become brown?
The main cause of the browning of coral bell plants is a rust disease brought on by Puccinia hucherae. If Heuchera receives too much sun, the leaves will also turn brown. Brown patches are another symptom of anthracnose on Heuchera leaves. The leaves also become brown from overfertilization.
Heuchera brown spots on leaves
Your Heuchera’s leaves have little brown spots on them that are brought on by a fungus called Puccinia hucherae. Heuchera-specific and extremely destructive, this fungus.
At first, the leaves’ little sunken portions will be seen. Rust-colored sunken areas can be seen on the lower surfaces of the leaves.
At some point, the stem and upper sides of the leaves will develop rust-colored lumps or patches. These textured sections develop holes.
How do you treat Heuchera rust?
- As soon as you notice any sick leaves, remove them all.
- Remove every leaf and let the plant sit bare for a bit. New leaves that are free of the rust will grow on the plant.
- Spray fungicides like Bayer Fungus Fighter Plus on the diseased plant sections if this doesn’t resolve the issue.
Prevention of Heuchera rust
- Airflow around your Coral Bells plant should be improved. Do not swarm them.
- Regularly remove the old, dead leaves because they are the rust fungus’s prime prey.
Too much sun
If a Heuchera plant receives too much sun, its light-colored leaves will become brown. One of my plants experienced what is known as sunburn, and I had to relocate it to a more shady area.
Heuchera prefers shade, so if the issue is too much sun, transfer the plant to a more shady location. If shifting the plant is not an option, artificially shade it.
Do heucheras like sun or shade?
Shaded areas are ideal for heuchera plants. After all, they are plants that prefer shade. If you give Coral Bells more light than it requires, the leaves will become yellow.
Why does my Heuchera have brown spots?
It is likely anthracnose disease if you notice dark patches on your Heuchera plant that do not resemble rust. A bacterial illness is anthracnose.
When the humidity level exceeds the ideal level, these Anthracnose patches form. These blemishes gradually spread and cover the entire leaf.
Too much fertilizer
If you give a heuchera plant a lot of fertiliser, the leaves will become brown. If overfed, coral bells plants experience salt stress.
In my honest view, fertiliser is not necessary for the coral bells plant to flourish. All the plant needs is some compost to bloom for a very long time.
If you’re not sure why, have the soil tested. If you take good care of the plant, it will recover.
Does Heuchera dieback in winter?
In Heuchera, dieback throughout the winter is normal. No need to freak out. You don’t need to do anything about the circumstance.
After the winter is gone, heuchera will recover. As usual, take care of your plant and allow it to recover.
Do coral bells thrive in containers?
The foliage of coral bells is primarily attractive. The majority of types come in shades of deep purple or burgundy, though they can also be seen in red and lime green.
Though they are not particularly showy, these blossoms are delicate and vibrant. Even while they can be attractive and serve as a good accent, the blossoms’ relative insignificance makes the leaves stand out on its own.
Alumroot is a dependable go-to plant to fill in spaces when you have a place that is a little dry and hot, and it works well for xeriscaping and water-wise gardening.
The majority of Heuchera will grow in USDA Hardiness Zones 4–9 and flourish in zone 5-7, which is in the middle. Some can, however, grow as far south as zone 11 or as far north as zone 3. Heuchera in upstate New York has the same vibrant, healthy appearance as those in Florida and Texas, in my opinion!
I left a particularly dry area of my garden unwatered for the entire summer to observe how different plants fared, and the coral bells looked just as good as they had on the day I had planted them.
Another wise move is to add coral bells to your containers. They thrive in pots and are tolerant of plant interactions. Heuchera is a simple addition to practically any design because of the wide range of colours that are available.