Boxwood has browning leaves

Asked May 12, 2020, 12:30 PM EDT

I have two "Green Velvet" plants in the front of my home. They are approximately 4 years old and this Spring I noticed that the new growth and top leaves are turning brown. Inside the plant is still green. Can you tell me what the issue is and can I do anything to save the plant?

Baltimore County Maryland

1 Response

This looks like damage from an insect pest called the boxwood leafminer.
Here is more about it https://extension.umd.edu/hgic/boxwood-leafminer-shrubs

The least toxic way to manage this pest would be to thin and prune the shrub by about one third. Thus you can avoid chemicals altogether and reduce problems for next year. Monitor for new growth and you can send us photos if you notice additional symptoms. See our webpage on managing and preventing
boxwood problems. Take a look at the video on how to prune your boxwood
https://extension.umd.edu/hgic/topics/boxwood-preventing-and-managing-common-pests-and-diseases

Marian