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How to Get Rid of Borers on Mums Plant

Updated: July 2, 2023

Borers can be a frustrating problem for gardeners, especially when they attack beautiful plants like mums. These destructive pests tunnel into the stems of the plant, causing wilting, stunted growth, and even death. If you’re dealing with borers on your mums, don’t worry – there are steps you can take to eliminate them and protect your plants. In this article, we’ll explore effective methods to get rid of borers on mums and keep your garden thriving.

Identify the Problem

Before you can effectively treat borers on your mums, it’s crucial to correctly identify the issue. Look for the following signs:

  1. Wilting or drooping leaves: Borers disrupt the flow of water and nutrients within the plant, leading to wilting or drooping leaves.
  2. Stunted growth: Infested mums may exhibit stunted growth or fail to reach their full potential.
  3. Sawdust-like frass: Borers leave behind a sawdust-like substance called frass near the entrance holes.
  4. Entry holes: Look for small entry holes in the stems of your mums, often accompanied by sap oozing out.

Once you’ve confirmed that borers are indeed the problem affecting your mums, it’s time to take action.

Remove Infested Stems

The first step in getting rid of borers is to remove any infested stems from your mums. Carefully inspect each stem and look for entry holes or sawdust-like frass. Using a sharp knife or pruning shears, cut off the affected stems about an inch below the damaged area. Make sure to sanitize your tools between cuts to avoid spreading the borers.

After removing the infested stems, dispose of them in a sealed bag or burn them to prevent the borers from spreading to other plants in your garden.

Utilize Beneficial Insects

Introducing beneficial insects into your garden can help control borer populations naturally. Trichogramma wasps are tiny parasitic wasps that lay their eggs inside borer eggs. When the wasp larvae hatch, they consume the borer eggs, effectively reducing the borer population.

You can purchase Trichogramma wasps from garden centers or online suppliers. Release them near the affected mums following the instructions provided. Repeat the release process at regular intervals throughout the growing season to ensure continuous control of borers.

Apply Insecticides

If the infestation is severe or you prefer a more aggressive approach, using insecticides can be an effective way to get rid of borers on your mums. However, it’s important to choose insecticides specifically formulated for borers and follow the instructions carefully to avoid harming beneficial insects or damaging your plants.

For chemical insecticides, look for products containing active ingredients like carbaryl or permethrin. These chemicals work by killing the borers upon contact or ingestion. Apply the insecticide according to the package instructions, focusing on the stems and foliage of the affected mums. Be sure to wear protective clothing and follow all safety precautions when using insecticides.

Implement Cultural Practices

In addition to removing infested stems and utilizing beneficial insects or insecticides, implementing cultural practices can help prevent future borer infestations and maintain healthy mums. Here are some practices to consider:

Proper Planting Techniques

When planting mums, make sure to dig a hole deep enough for the root ball and wide enough for proper spacing. Planting them too closely together can create crowded conditions that attract pests like borers. Additionally, avoid planting mums in areas with heavy clay soil, as it retains moisture and can promote borer infestations.

Regular Maintenance

Regularly inspect your mums for signs of borers or other pests. Catching the infestation early can prevent it from spreading and causing further damage. Prune away any dead or damaged stems promptly and dispose of them properly.

Watering Techniques

Water your mums deeply but infrequently to encourage deep root growth. Shallow, frequent watering can create a moist environment that attracts borers. Additionally, avoid overhead watering as it can promote fungal diseases that weaken the plants, making them more susceptible to borer attacks.

Winter Protection

Protecting your mums during the winter months can also help prevent borer infestations. Apply a layer of mulch around the base of the plants to insulate the roots and provide protection from extreme temperature fluctuations. This will help keep your mums healthy and less vulnerable to borers.

Conclusion

Dealing with borers on mums can be a challenge, but by following these steps, you can effectively get rid of these pests and protect your plants. Remember to identify the problem correctly, remove infested stems, and utilize beneficial insects or insecticides when necessary. Implementing cultural practices like proper planting techniques, regular maintenance, and winter protection will also help prevent future borer infestations and keep your mums thriving in your garden. With patience and persistence, you’ll be able to enjoy healthy, borer-free mums year after year.