Box Blight is a fungal disease that affects Buxus (boxwood) plants.
To control it:
Prune affected parts: Cut out and destroy any infected branches to prevent further spread.
Improve air circulation: Space your Buxus plants appropriately to allow better air circulation, as the disease thrives in humid conditions.
Avoid overhead watering: Water at the base of the plant to keep foliage dry and reduce the risk of infection.
Apply fungicides: Fungicides containing active ingredients like cyprodinil and fludioxonil can help control Box Blight, but their effectiveness may vary