UPDATE 28 November 2023
BOX TREE CATERPILLER
Temperatures are now starting to drop quietly so that any remaining caterpillars go into hibernation. If you did not treat in the autumn, it is advisable to be alert in April. If you did treat in autumn, the next treatment can be scheduled for early July.
More info on our page about Box tree caterpiller
BOXWOOD BLIGHT
We are having one of the wettest years on record and this is causing greatly increased infection pressure from boxwood fungus. The infection pressure has been high all autumn but usually stops after the first night frost. The next treatment is April/May next year at the earliest.
More info on our page about Boxwood Blight
BOX TREE CATERPILLER
The caterpillars are bright green with a black head. This Asian butterfly can grow as big as 4 cm. There are two generations in Belgium : April/May and August.
BOXWOOD BLIGHT
The investation starts with black spots on the leaf. A few days later the affected leaves will fall down en masse and black stripes appear on the young twigs.