Red Ants Damaging Box Hedging

I have another pest to add to the growing list of threats to a box plant’s health and well-being. This one is the red ant (Myrmica rubra). At a place where I work there had been a lot of head scratching trying to discover the reason why the leaves of single box plants were starting to yellow in a healthy, established box hedge. If it was nutrient deficiency or lack of watering then you would expect to see other box plants in the hedge displaying the same symptoms. The answer was explained by small mounds of loose, fine textured soil…