Boxwoods Turning Brown 2025. Boxwood turning brown includes pest infestations, exposure to dog urine, fungal diseases, improper watering, salt damage, and winter burn. Common reasons for boxwoods turning brown.

If you live in a place that experiences freezing temperatures in the winter, your boxwood may have been damaged by. The causes range from environmental stressors such as drought or winter damage, to diseases like boxwood blight, and even.