Update 14 September 2025
BOX TREE CATERPILLER
The box tree moths have finished flying and the eggs are hatching. These small caterpillars do not cause much damage, but control measures are recommended and can best be carried out now. If these young caterpillars are dealt with now, the pest pressure in the spring will be minimal and no further treatment will be necessary. Carry out treatment in dry weather.
More info on our page about Box tree caterpiller
BOXWOOD BLIGHT
Traditionally, autumn brings wetter conditions for plants due to dew during the night. It is advisable to treat them now to prevent further damage. It is best to alternate products to prevent resistance. From the first frost onwards, boxwood fungus is no longer active, or much less so, and treatment is not necessary.
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.