Pennsylvania can experience extreme freezing during the winter, and the weather may take a considerable toll on your boxwood. In addition, damage caused by winter damage (freezing soil, winter burn) will be visible if leaves start turning yellow during spring.
Yellowing and curling leaves can indicate a severe root rot problem. Treating root rot is all about improving soil drainage.
Boxwood yellowing/browning is often caused by:
- Pet Damage
- Volutella Blight
- Structural Damage
- Salt Damage
- Phytophthora Rot