Fungus and Disease Articles


Mushrooms growing in the lawn do not indicate you have a lawn disease or fungus in your St Augustine grass lawn. It means you have mushrooms - the flowering structure of fungi. Fungi are beneficial to the lawn by composting organic matter into plant food for the lawn.


During the cooler weather in Pinellas County, homeowners may see tannish crop circles in their lawn. Most likely those are caused by brown patch - a cool-weather disease. Brown patch forms perfect circles or lobed circles where individual circles have joined other circles. Many believe brown patch is caused by overwatering – it is not. Learn why.

Sugarcane Mosaic Virus is infecting lawns in Pinellas County. The most impacted areas are south of 38th Ave N and concentrated along the coastal areas.

Brown Patch is a cool weather fungus that when conditions are perfect, can cause cosmetic damage but not kill St Augustine turf grass lawns.


Small tan or straw-colored spots in your St Augustine grass lawn is Dollar Spot. They can be a few or many and make the lawn appear blotchy or spotted. Dollar spot signals your lawn is ready for a feeding

Fairy Rings are those dark green circles in the lawn with large white mushrooms growing along the outer edge.