1. Physically Remove the Bags
In winter or early spring (before the eggs hatch), handpick the bags from branches and destroy them. Don’t just drop them on the ground—burn them or soak them in soapy water to ensure the eggs don’t survive.
2. Use Natural Predators
Encourage birds like sparrows and chickadees, which feed on bagworms. You can also introduce beneficial insects like parasitic wasps that help control their population.
3. Apply Insecticides (Best for Young Larvae)
If you have a large infestation, consider using insecticides like Bacillus thuringiensis (Bt), which is a natural bacterium that kills young bagworms without harming beneficial insects. Apply it: In late spring or early summer when the larvae are small. On affected trees and shrubs, ensuring good coverage.
4. Maintain Healthy Trees
A strong, healthy tree is better able to withstand pests. Keep your trees well-watered, fertilized, and pruned to promote resistance against infestations.
Final Thoughts
That creepy hanging sack on your tree might look harmless, but it could be a hidden threat to your garden! Now that you know what bagworms are and how they affect your trees, you can take action before they cause serious damage.
Have you spotted bagworms on your trees before? Let us know in the comments how you handled them! 
