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How to Get Rid of Borers on Laurel Plant

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Updated: July 15, 2023

Laurel plants are a popular choice for gardens and landscapes due to their vibrant foliage and attractive appearance. However, these plants can often fall victim to borers, which are destructive insects that can cause significant damage if left untreated. In this article, we will explore the various methods you can use to get rid of borers on your laurel plant.

Identifying Borers

Before delving into the control methods, it is essential to be able to identify if your laurel plant is infested with borers. Borers are small insects that lay their eggs on the bark of the plant. Once the eggs hatch, the larvae burrow into the plant’s wood, where they feed and cause damage.

Signs of borer infestation include:

  1. Visible entry holes: Look for small holes on the trunk or branches of the plant, indicating where the borers have entered.
  2. Sawdust-like frass: This is a mixture of borer excrement and wood particles that can accumulate at the base of the plant or around entry holes.
  3. Wilting or yellowing leaves: As borers damage the plant’s vascular system, it can lead to wilting or discoloration of leaves.
  4. Dieback: Severe infestations can result in branch dieback or even death of the entire plant.

Natural Control Methods

If you have identified a borer infestation on your laurel plant, it’s crucial to take action promptly to prevent further damage. Here are some natural control methods you can try:

1. Pruning

Start by pruning away any infested branches or stems. Cut several inches below the visible entry hole to ensure you remove all affected wood. Disposing of these pruned branches away from your garden will prevent reinfestation.

2. Beneficial Insects

Encouraging the presence of beneficial insects in your garden can help control borers naturally. These insects, such as parasitic wasps and predatory beetles, feed on borer eggs or larvae. Planting flowers and herbs that attract these beneficial insects, such as marigolds and dill, can help reduce borer populations.

3. Applying Nematodes

Nematodes are microscopic roundworms that can be used as a biological control method for borers. These nematodes enter the borer larvae and release bacteria, which kills the pests from within. You can purchase nematodes from garden centers and follow the instructions for application.

4. Sticky Traps

Sticky traps are another effective natural control method for borers. These traps consist of a sticky surface that attracts and captures adult borers before they have a chance to lay their eggs. Place these traps near your laurel plant to intercept and trap adult borers, reducing the chances of further infestation.

Chemical Control Methods

While natural control methods can be effective, severe infestations may require the use of chemical insecticides. It’s important to note that chemical control should be a last resort and should be used with caution, following all safety instructions provided by the manufacturer. Here are some chemical control methods you can consider:

1. Insecticidal Sprays

Insecticidal sprays specifically formulated for borers can be applied to your laurel plant to kill both adult borers and their larvae. Be sure to choose an insecticide labeled for use on laurel plants and follow the instructions carefully when applying.

2. Systemic Insecticides

Systemic insecticides are absorbed by the plant and circulated throughout its tissues, making them an effective option for controlling borers hiding within the plant. These insecticides can be applied as a soil drench or injected into the trunk of the plant. However, exercise caution and follow the instructions to prevent any harm to beneficial insects or other wildlife.

Preventive Measures

Preventing borer infestations is always better than trying to control them once they have established. Here are some preventive measures you can take to protect your laurel plants:

  1. Maintain plant health: A healthy plant is less likely to be attacked by borers. Provide adequate water, sunlight, and nutrients to keep your laurel plant strong and resilient.

  2. Regular inspection: Regularly inspect your laurel plant for any signs of borers or other pests. Early detection can help prevent infestations from spreading.

  3. Prune properly: When pruning, ensure clean cuts and avoid leaving stubs that may attract borers.

  4. Clean garden tools: Borers can be transferred from one plant to another through contaminated tools. Clean your pruning tools thoroughly after each use to prevent the spread of pests.

  5. Avoid stress: Avoid causing stress to your laurel plant, as stress weakens its defenses against borers. This includes avoiding excessive pruning, over-fertilization, and improper watering practices.

By following these preventive measures and promptly addressing any signs of borer infestation, you can keep your laurel plants healthy and free from these destructive insects.

In conclusion, borers can pose a significant threat to your laurel plants if left untreated. By identifying the signs of infestation early on and using a combination of natural and chemical control methods, you can effectively get rid of borers and protect your plants from further damage. Implementing preventive measures will also help maintain the health of your laurel plants and reduce the risk of future infestations.

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