Brown patches on lawn ‘could be sign of autumn disease’
After a dry, hot summer and a sharp drop to cool autumn temperatures, grasses across Britain are struggling with dramatic change. However, there is an additional threat that lawns must face as we enter the colder months, and this can begin with the appearance of brown spots.
Chris McIlroy, turf expert Grass PeopleHe explained: “You may be used to seeing the odd brown patch on dehydrated lawns in the summer months, but the problem can be just as common this time of year. This is because Fusarium is a common lawn disease that occurs in the autumn.”
“Knowing how to detect and address it can help you keep your lawn healthy during the cold months. The disease manifests itself as small, yellow and brown spots that expand.”
Fusarium, also known as Microdochium patch, is a fungal condition that becomes more common in late fall and winter.
Mr McIlroy said: “These spots can also have thin layers of white or pink mold resembling cotton wool, which spreads easily in damp conditions. Prevent this by aerating your lawn before the first frost to improve drainage and reduce the risk of waterlogging. Nitrogen-rich fertilizers can encourage grass growth, but this can make the lawn more vulnerable to Fusarium. A balanced fertilizer is best at this time of year.” is the choice.
“If you have a severe case of Fusarium, a fungicide may be necessary. However, you should always follow the guidelines closely and consult a lawn care professional if you are unsure. Fungicides can negatively affect beneficial insects and microorganisms in the soil, which are important for a healthy ecosystem, so you do not want to use them unnecessarily.”
As we enter the colder months, it’s crucial to keep an eye out for Fusarium and take proactive steps to give your lawn a fighting chance against the challenges ahead. But Mr. McIlroy recommends clearing the lawn of leaves and other debris and minimizing footfall when the grass is sensitive.
He advised: “Regular monitoring will help. Fallen leaves can trap moisture and create the perfect environment for fungal diseases. It is essential to minimize traffic on lawns, especially in wet or frosty conditions, to prevent excessive damage.”
