09/09/2026
Been out early this week? You've probably seen this and not known what it was.
Thin pink or red threads through the grass, in patches that look a bit washed out or straw coloured from the house. It shows up after a heavy dew, and with nights down to nine or ten degrees and a bit of rain about, grass is staying damp.
It's red thread. It's a fungus, it's one of the most common diseases we see on lawns, and whilst it looks bad, it hardly ever kills the grass.
Right now it's got everything it wants. Cold nights, damp days, dew on the leaf for hours every morning, and a lawn that's stressed after a long dry summer.
The obvious move is to put a high nitrogen feed down, because being short on nitrogen is part of the problem. In addition an application of iron can help toughen new growth and a seaw**d spray helps massively too.
Try not to worry, the lawn will recover with the right treatment. Keep the mower height up, make sure the blades are sharp, and give it a proper feed. It grows out.
Got it in yours? Read the full guide: https://www.shrekfeet.com/blog/red-thread?utm_source=facebook&utm_medium=social&utm_campaign=red-thread-appearing&utm_content=fb-post7-0815