If your coral bells have ragged holes, you likely have nocturnal visitors foraging in your garden. You are probably wondering what eats coral bells, as these popular perennials are surprisingly tasty to a range of creatures. This guide will help you identify the culprits and give you practical, effective strategies to protect your plants.
We will cover everything from common insects to larger animals. You will learn how to spot the signs of different pests. Then, we will walk through proven control methods, from simple barriers to targeted treatments.
What Eats Coral Bells
Many gardeners are surprised to find their coral bells damaged. The list of suspects is longer than you might think. Both chewing and sucking pests can cause significant harm to the foliage and roots.
Identifying the correct pest is the first step to saving your plants. The type of damage you see offers a major clue. Here are the primary animals and insects that target coral bells.
Common Insect Pests
These small creatures are often the most frequent offenders. They can quickly multiply and cause extensive damage if not checked.
Black Vine Weevils
This is a top pest for coral bells. The adult weevils chew distinctive notches along the leaf edges at night. The real danger, however, lies beneath the soil.
- Adult Damage: Semi-circular notches on leaf margins.
- Larval Damage: White, C-shaped grubs eat the roots, often causing sudden plant collapse.
- Signs: Wilting plants with notched leaves; check the root ball for grubs.
Slugs and Snails
These are classic nocturnal feeders that love the tender leaves of coral bells, especially in moist, shady conditions. They leave behind irregular holes and a tell-tale slime trail.
- Damage: Ragged, irregular holes in the leaves, often in the center.
- Signs: Silvery mucus trails on leaves or the soil around the plant.
Strawberry Root Weevils
Similar to black vine weevils, these pests also notch leaves and their larvae attack roots. They are slightly smaller but equally destructive.
Foliar Nematodes
These are microscopic worms that live inside the leaf tissue. They cause a different kind of damage that is often mistaken for disease.
- Damage: Angular, yellow to brown lesions between leaf veins, leading to severe browning and dieback.
- Signs: Damage typically starts on lower leaves and moves upward, especially in wet, humid weather.
Larger Animal Pests
Sometimes the culprit is not an insect. Mammals and birds can also develop a taste for your garden plants.
Deer
While not their absolute favorite, deer will browse coral bells, especially when other food sources are scarce. They tend to tear or rip the foliage, leaving behind shredded leaves and broken stems.
Rabbits and Groundhogs
These small mammals can neatly clip off stems and leaves. Rabbit damage often looks like clean-cut stems at a 45-degree angle. Groundhogs can eat entire plants down to the ground.
Voles
Voles are rodents that tunnel underground and feed on roots and crowns. Damage often appears as unexplained wilting or plant death, with visible runways in the grass or mulch nearby.
Less Common Culprits
Other pests may occasionally cause issues. Aphids or spider mites might suck sap from the undersides of leaves, causing stippling or yellowing. Birds sometimes peck at leaves, but this is rare.
How To Identify The Damage
Correct identification is 90% of the battle. Look closely at the pattern of destruction on your coral bells. The evidence left behind points directly to the pest responsible.
Chewing Damage Patterns
This is the most common type of damage seen on coral bells. The shape of the eaten areas provides a clear clue.
- Notched Leaf Edges: This is almost certainly the work of adult weevils (black vine or strawberry root). They feed at night, so you may never see them.
- Large, Ragged Holes in Leaf Centers: Slugs and snails are the likely suspects. Check for slime trails in the early morning.
- Entire Leaves or Stems Clipped Off: Think rabbits or groundhogs. Look for tracks or droppings around the garden.
- Shredded or Torn Foliage: This type of damage is typical of deer browsing.
Sucking Damage And Other Symptoms
Some pests don’t chew; they extract fluids or live inside the plant, causing different symptoms.
- Yellow or Brown Angular Leaf Spots: This is a key sign of foliar nematodes. The lesions are bounded by the leaf veins.
- General Wilting or Collapse With No Leaf Damage: This suggests root feeders. Gently lift the plant and check for weevil grubs or root damage from voles.
- Stippled or Pale Leaves: Look on the undersides for tiny insects like aphids or spider mites.
Conducting A Night Inspection
Since many pests are nocturnal, a nighttime check with a flashlight is very effective. You might catch weevils, slugs, or rabbits in the act. Be quite and move slowly to not disturb them.
Effective Prevention and Control Methods
Once you know what you’re dealing with, you can choose the right control strategy. An integrated approach using multiple methods is always most successful.
Cultural And Physical Controls
These methods are your first line of defense. They create an environment that is less inviting to pests.
Barrier Methods
Creating a physical block is highly effective for many pests.
- Copper Tape: Slugs and snails receive a mild electric shock from copper. Apply tape around pot rims or garden bed edges.
- Diatomaceous Earth: This powder, made from fossilized algae, has sharp edges that cut insects. Sprinkle a ring around plants; reapply after rain. Wear a mask when applying to avoid inhalation.
- Floating Row Covers: Lightweight fabric placed over plants can exclude weevils and other flying insects. Secure the edges well.
- Fencing: For deer and rabbits, a physical fence is often the only reliable solution. For rabbits, it needs to be buried at least 6 inches deep.
Garden Sanitation
Keeping your garden clean removes hiding places and breeding grounds for pests.
- Remove debris, fallen leaves, and weeds where slugs and weevils hide.
- Space plants properly to allow for good air circulation, which reduces humid conditions that favor slugs and nematodes.
- Water in the morning so foliage dries by evening, making the area less attractive to slugs.
Organic And Biological Treatments
These solutions use natural predators or substances to manage pest populations.
For Slugs and Snails
- Beer Traps: Sink a cup filled with cheap beer into the soil; slugs are attracted and drown.
- Iron Phosphate Baits: These are safe for pets and wildlife. Scatter pellets according to label instructions; slugs eat them and stop feeding.
- Hand-Picking: Go out after dark with a flashlight and pick them off. It’s very effective for small gardens.
For Weevils
Controlling weevils requires targeting both the adults and the grubs.
- Beneficial Nematodes: Apply *Heterorhabditis bacteriophora* nematodes to the soil. They seek out and kill weevil grubs naturally.
- Sticky Trunk Barriers: Wrap the base of the plant stem with a sticky substance like Tanglefoot to trap climbing adult weevils.
- Shake Plants at Night: Place a white sheet under the plant and gently shake it. Adults will fall off and can be disposed of.
Encouraging Natural Predators
Invite beneficial animals into your garden to help with pest control.
- Attract birds with feeders and birdbaths; they eat many insects.
- Create habitats for ground beetles, frogs, and toads, which consume slugs and insects.
Chemical Control Options
Use chemicals as a last resort and always choose the least toxic, most targeted option available. Always read and follow the label directions precisely.
Targeted Insecticides
- For Weevil Grubs: Apply a soil drench containing imidacloprid or chlorantraniliprole in late summer or early fall when grubs are active.
- For Adult Weevils: A foliar spray containing acetamiprid or bifenthrin can be used if infestation is severe. Spray at night when they are active.
- For Foliar Nematodes: There are no effective chemical controls available to home gardeners. Removal of infected leaves and plants is the best course of action.
Using Products Responsibly
Spot-treat only affected plants rather than spraying the whole garden. Avoid spraying when plants are in bloom to protect pollinators. Never apply products right before a rain to prevent runoff.
Long-Term Strategies for a Resilient Garden
Building a healthy, balanced garden ecosystem is the best way to minimize pest problems year after year. It requires a shift from simply reacting to problems to proactively preventing them.
Choosing Resistant Coral Bells Varieties
Some Heuchera varieties show better resistance to pests like foliar nematodes or are less palatable to slugs. While no plant is completely immune, starting with tougher varieties gives you an advantage.
- Reportedly Nematode-Tolerant: ‘Caramel’, ‘Peach Flambe’, ‘Marmalade’.
- Thicker-Leaved Varieties: Varieties with thicker or hairier leaves, like ‘Palace Purple’, may be slightly less appealing to slugs.
Companion Planting Strategies
Surrounding your coral bells with plants that deter pests or attract their predators can create a natural protective barrier.
- Plants That Deter Slugs: Lavender, rosemary, sage, and fennel have strong scents that slugs tend to avoid.
- Plants That Attract Beneficials: Yarrow, dill, and sweet alyssum attract ladybugs, lacewings, and parasitic wasps that control pest insects.
Building Healthy Soil
Healthy plants growing in nutrient-rich, well-structured soil are better able to withstand and recover from pest attacks. Conduct a soil test to amend your soil properly. Adding organic compost improves soil structure and fosters beneficial microbial life that can suppress some soil-borne pests.
FAQ Section
What Animal Is Eating My Coral Bells At Night?
The most common nocturnal eaters of coral bells are slugs, snails, and adult weevils (which chew notches in leaves). Rabbits and deer can also feed at dawn and dusk. To be sure, inspect your garden after dark with a flashlight to catch the culprit in action.
How Do I Stop Slugs From Eating My Heuchera?
Use a multi-pronged approach. Set up beer traps or iron phosphate bait. Apply a barrier of diatomaceous earth or copper tape around plants. Encourage natural predators like birds and frogs. Hand-pick slugs at night for immediate control in small areas.
Are Coral Bells Deer Resistant?
Coral bells are often listed as deer-resistant, but this is not a guarantee. Deer will eat them, especially when their preferred food is scarce. If deer pressure is high in your area, you may need to use repellents or install fencing for reliable protection.
What Causes Holes In Coral Bell Leaves?
Holes are typically caused by chewing pests. Ragged holes in the middle of leaves are from slugs or snails. Neat, semi-circular notches on the leaf edges are from weevils. Large, torn areas may indicate deer or rabbit damage.
Can Coral Bells Recover From Pest Damage?
Yes, coral bells can recover remarkably well if the crown and roots are still healthy. Remove severely damaged leaves to encourage new growth. Control the pest population to prevent further damage. Ensure the plant has adequate water and a light application of fertilizer to support its recovery.