Maintaining a pristine box hedge can be a significant challenge for many UK gardeners. Once the pride of formal gardens across Britain, these classic evergreens increasingly fall victim to devastating diseases and pests. If you've noticed your beloved box plants turning yellow, it's time to take action before they deteriorate further. Thankfully, with proper diagnosis and treatment—or by considering the growing range of disease-resistant alternatives—you can restore your garden's formal elegance without the constant worry of box blight or caterpillar infestations. Diagnosing the Cause of Yellowing Box Hedges When your box hedge begins displaying yellow foliage, proper diagnosis is essential before attempting any treatment. The Royal Horticultural Society, the UK's…