Boxwoods

Question

Some of the boxwoods have a lot of brown stems in the middle of the mature plants. Are these plants a dying or can they survive and fill in green again?

Answer 1

This could be caused by environmental issues, pests or disease.
You will need to inspect the plants more closely.
It's a good idea to remove and dead material and clean up the area around the plants and dispose of the plant material.
Here are some articles that will help.

https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/yellow-or-brown-boxwoods.htm
https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/boxwood-blight-treatment.htm
https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/diseases-affecting-boxwoods.htm