Combating the invasive box tree moth: A simple, homemade solution

The box tree moth is among the most detrimental pests, and immediate action is advised upon its detection in our gardens. An easy-to-make homemade spray, requiring just two affordable ingredients, proves to be an effective solution.

Originating from Asia, the box tree moth made its way to Europe and has spread rapidly across the continent, including Poland. This invasive butterfly species poses a significant threat to gardens. Prompt action is essential to prevent them from decimating our hedges.

The box tree moth is predominantly found on boxwood leaves, which explains its name. However, it also feeds on holly and euonymus plants.

Young larvae target the delicate upper leaf surface, and as they mature, they consume the entire leaf, drying out the plants. Signs of their activity include sticky webs among the branches and leaves and greenish fecal lumps within the web.

While smaller larvae may be hard to spot, the larger ones are green and more visible. Moths are attracted to light at night, making it an optimal time to inspect the bushes with a flashlight.

To combat the box tree moth, spraying the hedge with a strong water jet can dislodge larvae, caterpillars, and adults from the leaves. Alternatively, a homemade spray of water, vinegar, and oil is highly effective. Mix approximately 3.4 fluid ounces (100 millilitres) of spirit or apple cider vinegar and four tablespoons of oil (e.g., sunflower oil) into a quart (about 1 litre) of water.

This concoction should be applied to the leaves and branches. The oil ensures the mixture adheres to the leaves longer, discouraging moths from returning. After spraying, it's crucial to remove insects from the ground and eliminate them from the garden.