Boxwood Moth (Cydalima perspectalis)

Have you noticed damaged or defoliated boxwood shrubs in your yard? The invasive Boxwood Moth (also known as Box Tree Moth) has been spotted in Michigan, and it can devastate your beloved boxwoods!

How to Spot Boxwood Moth Damage:

Webbing & Silk Threads – Larvae spin protective webs around leaves.

Leaf Damage – Chewed edges, skeletonized leaves, or complete defoliation.

Green Caterpillars – Look for bright green larvae with black stripes.

Brown Patches – Severe infestations can turn shrubs brown as they die.

What You Can Do:

Inspect Regularly – Check boxwoods for signs of larvae or webbing.

Prune Infested Areas – Remove and destroy affected branches.

Use Bt (Bacillus thuringiensis) – An organic treatment effective against caterpillars.

Consider Systemic Insecticides – For severe cases, consult a professional.

Pheromone Traps - These traps attract and capture male boxwood moths, preventing them from mating and reproducing. (but that is after they have matured to their moth form).

Apply Mulch - Mulch around boxwood plants to suppress weed growth and create a less favorable environment for caterpillars. (after you take care of your infestation).

Additional Tips:

~ Treat boxwood plants early in the season when caterpillars are first detected.

~ Repeat treatments as necessary, especially if new caterpillars are observed.

~ Follow all safety instructions when using insecticides and other pest control methods.

~ Consult with a local pest management professional for specific advice and treatment options.

Report Sightings!

If you suspect Boxwood Moth, report it to the Michigan Department of Agriculture and Rural Development (MDARD) or your local MSU Extension office. Early detection helps control the spread!

Contact MSU Extension Office:

https://www.canr.msu.edu/outreach/contact

MDARD:

https://www.michigan.gov/mdard

Have you dealt with Boxwood Moth? Share your tips below! #MichiganGardening #BoxwoodMoth #SaveTheBoxwoods