It’s in the soil. It grows from old tree or bush roots. It shows up when conditions include high temperatures combined with high humidity. Fungus is a fact of life.
If you hear the word “tropics” on the news, look for your grass to start showing signs of fungus. Here’s a quick way to figure out if the weather is tropical:If the average temperature and humidity add up to 150 or more, then it’s tropical. Dew points above 65 also are considered tropical weather. Right now, when we’ve had plenty of rain and the temperatures are high, there’s a good chance fungus will appear.