Update 15 July 2024
BOX TREE CATERPILLER
The first young caterpillars have been spotted, so it is quiet time to treat again. This can preferably be done with Conserve Garden based on spinosad. This is a product authorised for organic cultivation of vegetables, fruit and ornamental crops. Products based on Bacillus thuringiensis also have a good effect and are organic but are not available for private use in Belgium. Chemical caterpillars also work fine and are not harmful to birds according to the latest scientific studies.
More info on our page about Box tree caterpiller
BOXWOOD BLIGHT
Due to thunderstorms, fungal pressure is high and treatment is necessary. The heavy rain has allowed the boxwood fungus to develop strongly. Regular treatments can keep the disease under control.
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.