Updated: April 8, 2022

Gayfeather, also known as Liatris spicata, is a beautiful perennial plant that produces tall spikes of purple flowers. However, worms or caterpillars can sometimes infest these plants, causing damage to the leaves and flowers. In this article, we’ll discuss how to identify these pests and how to get rid of them.

Identifying Worms in Gayfeather Plants

The worms that commonly infest gayfeather plants are called leafrollers. These pests are small caterpillars that roll themselves up inside the leaves of the plant, making it difficult to see them. However, you may notice some telltale signs of their presence, including:

  • Holes in the leaves
  • Brown spots on the leaves
  • Leaves that have been rolled up or tied together with silk threads
  • Presence of tiny black or green droppings on the plant

If you notice any of these signs, it’s likely that your gayfeather plant has been infested with leafrollers.

Getting Rid of Worms in Gayfeather Plants

There are several methods you can use to get rid of worms in your gayfeather plant, including:

1. Handpicking

If you only have a few gayfeather plants and a small infestation, you can try handpicking the worms off the plant. Look for leaves that have been rolled up or tied together and carefully unroll them to expose the worm. You can then pick it off the plant and dispose of it.

2. Pruning

If the infestation is more widespread, you may need to prune back some of the affected leaves and stems. Use clean pruning shears to cut off any leaves or stems that show signs of infestation. Be sure to dispose of these cuttings in a sealed plastic bag or burn them to prevent the worms from spreading.

3. Neem Oil

Neem oil is a natural insecticide that can be effective in getting rid of worms in gayfeather plants. Mix one tablespoon of neem oil with one quart of water and spray it on the plant, focusing on the leaves and stems that show signs of infestation. Repeat this process every 7-10 days until the infestation is under control.

4. Bacillus Thuringiensis

Bacillus thuringiensis, or Bt for short, is a naturally occurring bacteria that can be used to control worms in gayfeather plants. It works by producing a toxin that targets the digestive system of the worms, causing them to stop feeding and eventually die. You can purchase Bt in powder form and mix it with water according to the instructions on the package. Spray this mixture on the affected areas of your gayfeather plant every 7-10 days until the infestation is under control.

Preventing Worms in Gayfeather Plants

The best way to prevent worms from infesting your gayfeather plants is to maintain good garden hygiene. Here are some tips to keep your plants healthy and pest-free:

  • Remove any dead or decaying plant material from around your gayfeather plants.
  • Keep the area around your plants clean and free of debris.
  • Water your plants at the base, rather than from above, to avoid creating damp conditions that are ideal for pests.
  • Fertilize your plants regularly with a balanced fertilizer to keep them healthy and strong.
  • Monitor your plants regularly for signs of infestation and take action as soon as you notice any problems.

By following these tips, you can help keep your gayfeather plants healthy and free from worms.

Frequently Asked Questions

Can worms harm my gayfeather plant?

Yes, worms can cause damage to the leaves and flowers of gayfeather plants, which can affect their overall health and appearance.

Are there any natural remedies for getting rid of worms in gayfeather plants?

Yes, neem oil and Bacillus thuringiensis are both natural remedies that can be effective in getting rid of worms in gayfeather plants.

Can I use chemical pesticides to get rid of worms in my gayfeather plants?

While chemical pesticides can be effective, they can also harm beneficial insects and pollinators. It’s best to try natural remedies first and only use chemical pesticides as a last resort.