19 June 2024 , 14:14
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A plant expert has revealed a garlicky solution to tackling a deadly moth that is attacking box tree plants across the UK this summer.
The box tree moth, also known as Cydalima perspectalis, has been a persistent menace since arriving in the UK in 2007. Expert Elise Harlock said it was continuing to devastate cherished box plants by swiftly reducing them from lush green to skeletal remains, according to the expert. Active from April to October, these deadly moths pose a continuous threat to gardeners, she said.
What are box tree moths?
Box tree moths are invasive pests from East Asia that have spread rapidly across the UK, Elise said. The adult moths are identifiable by their white wings with brown borders and their caterpillars are greenish-yellow with black heads. Overwintering as caterpillars in box plant canopies, they emerge in spring to cause extensive damage, reports Devon Live.
Signs of infestation
Early signs of a box tree caterpillar infestation include clear webbing on plants. These caterpillars feed on leaves, causing significant die-back and even boring into the plant's bark. Without timely intervention, these pests can completely kill box plants and hedges, leaving a devastated garden landscape.
Garlic to ward off box tree moths
Elise, the brand manager at Prestige Flowers, has revealed a smart and budget-friendly solution to protect your box plants from these ravenous pests. "Box tree moths are a serious problem, but there are simple, natural methods to keep them at bay without resorting to harsh chemicals," she stated.
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"One effective strategy is to use garlic spray, which acts as a natural insect repellent." Elise detailed the process of creating this garlic spray: "Start with two cloves of garlic. Crush them and soak them in about 500ml of water overnight. In the morning, strain the mixture to remove the garlic pieces.
"Add a teaspoon of vegetable oil and a few drops of dish soap to this garlic water. The oil helps the mixture stick to the leaves, and the soap helps to disperse it evenly. Once you have your spray ready, pour it into a spray bottle and apply it directly onto your box plants. Make sure to cover the leaves thoroughly, especially on the undersides where pests tend to hide.
"Repeat this process every two weeks or after heavy rain to maintain its effectiveness. This garlic spray works by repelling the moths and caterpillars without harming the plants or the surrounding environment. It's a safe and cost-effective method that can help keep your box plants healthy and vibrant."
Other tips for managing box tree moths
In addition to using garlic spray, there are several other practical steps you can take to manage and prevent box tree moth infestations. Regular monitoring of your box plants, particularly during the active months from April to October, is vital. "Look out for signs of webbing or caterpillars, as early detection can prevent severe damage," Elise advised. "If you spot caterpillars, remove them by hand and destroy them to prevent further infestation."
Pheromone traps can also be beneficial. These traps are useful for monitoring moth activity and can reduce the population by attracting and capturing male moths. Encouraging natural predators such as birds can help control the caterpillar population. "Consider adding bird feeders or bird-friendly plants to your garden to attract these helpful allies," Elise suggested.