Lawns that have brown, almost circular, diffuse spots in winter are often suffering from snow mould. This fungal disease occurs in cold and humid weather, often after snowfall. Prevent this by aerating and adding sand to your lawn in the spring. Feed with a low-chloride potassium fertiliser if there is a potassium deficiency. The potassium fertiliser increases the lawn’s resistance to drought, frost, diseases and pests.
