How to protect and treat Box (Buxus)
The plants are attacked by an insect, “pyralis” (Fr : pyrale). (or meal moth, eastern firefly and big dipper firefly)
They can be protected and treated by spraying products against “la pyrale du bois” or “la pyrale
If you prefer to use organic sprays, there is one called “Solabiol” which is available at Racine in Draguignan and probably other places.
Box ravaged by the caterpillar