Updated: June 28, 2023

The Hot Lips plant (Salvia microphylla ‘Hot Lips’) is a beautiful and popular flowering plant that adds vibrant color to any garden or landscape. However, one of the biggest challenges that gardeners face when growing Hot Lips plants is dealing with borers. These pests can cause significant damage to the plant if left unchecked. In this article, we will discuss how to identify and get rid of borers on Hot Lips plants to ensure their continued health and beauty.

Understanding Borers and their Damage

Borers are insects that lay their eggs on or near the bark of plants. When the eggs hatch, the larvae bore into the plant’s tissue, where they feed on the inner bark, sapwood, or cambium layer. This feeding activity disrupts the flow of nutrients and water within the plant, leading to weakened stems, wilting foliage, and even death in severe cases.

Some common signs of borer infestation on Hot Lips plants include:

  1. Wilting or drooping leaves: Infested plants often show signs of wilting even when adequately watered.
  2. Discolored or dying foliage: The leaves may turn yellow, brown, or black due to the lack of nutrients reaching them.
  3. Entry holes: Look for small holes in the stem or branches where the borers initially entered.
  4. Sawdust-like frass: Borers leave behind sawdust-like excrement called frass near their entry holes.

Prevention is Key

As with any pest problem, prevention is always better than trying to cure an infestation. Here are some preventive measures you can take to minimize the risk of borers attacking your Hot Lips plants:

1. Choose healthy plants:

When purchasing Hot Lips plants, make sure to select healthy specimens from a reputable nursery. Inspect the leaves and stems for any signs of damage or pests before bringing them home.

2. Provide proper care:

Maintaining optimal growing conditions for your Hot Lips plants can help keep them healthy and less susceptible to borer infestations. Ensure they receive adequate sunlight, water, and nutrients. Avoid over-fertilizing, as excessive nitrogen can attract borers.

3. Mulch:

Applying a layer of organic mulch around the base of your Hot Lips plants can help regulate soil moisture and temperature, reducing stress on the plant. However, keep the mulch away from the plant’s stem to prevent creating a favorable environment for borers.

4. Prune regularly:

Regular pruning helps maintain the overall health and shape of your Hot Lips plants. Remove any dead or diseased branches promptly, as these can attract borers. Also, thinning out dense growth allows better air circulation, making the plant less appealing to pests.

Natural Control Methods

If you notice signs of borer infestation on your Hot Lips plants, it’s essential to take immediate action to limit their damage. Here are some natural control methods you can employ to get rid of borers:

1. Manual removal:

For small infestations, you can physically remove the borers using a sharp knife or pruners. Carefully cut into the stem or affected branches until you find the larvae or pupae. Dispose of them in a sealed bag to prevent reinfestation.

2. Beneficial insects:

Encouraging beneficial insects like parasitic wasps and predatory beetles in your garden can help control borer populations naturally. These insects feed on borer larvae and can be attracted by planting nectar-rich flowers nearby.

3. Neem oil:

Neem oil is a natural insecticide derived from the seeds of the neem tree. It works by disrupting the feeding and reproductive systems of pests like borers. Dilute neem oil according to the manufacturer’s instructions and apply it to the affected areas of the plant. Repeat every 7-10 days until the infestation is under control.

4. Insecticidal soap:

Insecticidal soaps are effective against a wide range of pests, including borers. These soaps work by suffocating the insects upon contact. Mix insecticidal soap with water according to the label instructions and spray it on the affected parts of the plant. Repeat as necessary.

Chemical Control Methods

If natural control methods fail to eliminate the borer infestation, you may need to resort to chemical insecticides as a last resort. However, it is essential to use these chemicals responsibly and follow all safety precautions:

  1. Choose an appropriate insecticide labeled for borer control.
  2. Read and follow the instructions carefully, including any safety precautions.
  3. Apply the insecticide during the appropriate time of year and weather conditions.
  4. Target the affected areas of the plant, ensuring thorough coverage.
  5. Monitor the plant closely and repeat applications if necessary.

Remember, chemical control should only be used when other methods have failed or when the infestation is severe and poses a significant risk to the plant’s health.

By taking preventive measures and promptly addressing any signs of borer infestation, you can ensure that your Hot Lips plants remain healthy and beautiful throughout the growing season. Regular monitoring and proper care are key to keeping these pests at bay and enjoying the vibrant blooms of your Hot Lips plants for years to come.