How to Get Rid of Borers on Laceleaf Plant

Laceleaf plants, also known as laceleaf maples or Acer palmatum dissectum, are beautiful ornamental trees that add a touch of elegance to any garden or landscape. With their delicate foliage and graceful branching, laceleaf plants are a popular choice among gardening enthusiasts.

However, laceleaf plants are not immune to pests, and one of the most destructive pests that can infest these plants is borers. Borers are insects that tunnel into the wood of trees and shrubs, causing damage that can weaken or even kill the plant if left untreated.

If you notice signs of borer infestation on your laceleaf plant, such as small holes in the bark, sawdust-like frass, or wilting branches, it’s important to take action immediately to prevent further damage. In this article, we will discuss effective methods to get rid of borers on laceleaf plants and restore the health and beauty of your trees.

Identify the Type of Borer

Before you can effectively treat a borer infestation, it’s important to identify the type of borer you are dealing with. Laceleaf plants are commonly attacked by several types of borers, including flatheaded borers and roundheaded borers.

Flatheaded borers have flat larvae with enlarged thoracic segments and are usually found in newly planted or stressed trees. Roundheaded borers have cylindrical larvae with distinct heads and are typically found in older, more established trees.

Once you have identified the type of borer infesting your laceleaf plant, you can proceed with the appropriate treatment method.

Cultural Control Methods

Cultural control methods involve creating an environment that is unfavorable for borers and promoting the health and vigor of your laceleaf plant. Here are some cultural control methods you can implement:

1. Pruning

Pruning is an essential step in controlling borer infestations. Remove and destroy any infested branches or limbs, making sure to cut at least 6 inches below the visible signs of borer damage. Pruning also helps improve air circulation, which can deter borers from laying eggs on your laceleaf plant.

2. Proper Watering and Fertilization

Keeping your laceleaf plant properly watered and fertilized is crucial for its overall health and resistance to borers. Water deeply but infrequently, allowing the soil to dry out between watering sessions. Avoid over-fertilizing, as excessive nitrogen can attract borers.

3. Mulching

Apply a layer of organic mulch around the base of your laceleaf plant, making sure to keep the mulch a few inches away from the trunk. Mulch helps conserve moisture, regulate soil temperature, and suppress weeds, creating a healthier environment for your plant.

Chemical Control Methods

If cultural control methods are not sufficient in controlling borers on your laceleaf plant, you may need to resort to chemical control methods. Here are some options to consider:

1. Insecticides

Insecticides containing the active ingredient permethrin or bifenthrin can be effective in controlling borers. These insecticides should be applied according to the manufacturer’s instructions and timing is crucial. Apply when adult borers are active, typically in late spring or early summer.

2. Systemic Insecticides

Systemic insecticides are absorbed by the laceleaf plant and transported throughout its tissues, providing long-lasting protection against borers. Imidacloprid is a commonly used systemic insecticide that can be applied as a soil drench or injected directly into the trunk.

It’s important to note that while insecticides can be effective in controlling borers, they should be used as a last resort and with caution. Always read and follow the instructions on the product label, and consider consulting with a professional arborist or horticulturist before using insecticides on your laceleaf plant.

Biological Control Methods

Biological control methods involve introducing natural enemies of borers to help reduce their population. Here are some biological control methods to consider:

1. Parasitic Wasps

Parasitic wasps, such as the Tetrastichus planipennisi, are natural enemies of borers. These tiny wasps lay their eggs inside borer larvae, which eventually kills them. If you suspect a borer infestation, you can contact your local extension office or a professional arborist to inquire about the availability of parasitic wasps in your area.

2. Beneficial Nematodes

Beneficial nematodes are microscopic worms that feed on borer larvae in the soil. They can be purchased and applied to the soil around your laceleaf plant to help control borer populations naturally.

Conclusion

Borer infestations can be devastating to laceleaf plants, but with proper identification and timely intervention, you can effectively get rid of these pests and restore the health and beauty of your trees. Remember to start with cultural control methods and only resort to chemical or biological control methods if necessary.

By implementing pruning, proper watering and fertilization practices, and using appropriate insecticides or natural enemies, you can protect your laceleaf plants from borers and enjoy their stunning beauty for years to come.