Nate from Myrtle Beach, Sc writes
My boxwood outer structure does not look healthy green. inspecting interior of plant, it looks grayish, and somewhat like powdery mildew
We would recommend that you consult with your local cooperative extension office Master Gardener to determine what is causing the boxwood to appear unhealthy. Southern AG Liquid Copper Fungicide is safe for applications to established shrubs, trees, ornamental flowers, etc if used as directed.
Answer last updated on: 09/24/2018