Web Worms

Understanding Webworms

Webworms are the larvae of a small white moth. They create large, silky webs on tree branches where they live and feed on leaves. Commonly affected trees include pecans, walnuts, elms, and various fruit trees. Understanding their lifecycle is key to controlling these pests effectively.

Preventive Measures

Preventing webworm infestation begins with good garden practices:

• Regularly inspect trees and shrubs for early signs of webbing.
• Prune and dispose of infested branches to reduce the population.
• Promote the health of your trees through proper watering, mulching, and fertilization to increase their resistance to damage.

Natural Control Methods

There are several eco-friendly ways to control webworms:

• Introduce natural predators like birds or beneficial insects that feed on webworms.
• Handpick the webs and caterpillars in the early stages of infestation.
• Apply Bacillus thuringiensis (Bt), a natural bacterium that’s safe for plants, pets, and humans, but lethal to caterpillars.

Chemical Controls

If the infestation is severe, chemical controls may be necessary:

• Insecticides can be effective, but they should be used as a last resort due to their impact on beneficial insects.
• Choose targeted treatments that minimize harm to non-target species and follow the application instructions carefully.

Professional Assistance

For extensive infestations or when dealing with tall trees, professional help may be required. Certified arborists or pest control services can provide safe and effective treatments, especially in cases where the use of specialized equipment is necessary.