San Jose, Ca
|Over the last month, an area of lawn has gotten spongey and reddish brown patches. Now that area is getting twice as large and growing. What could it be and how do I reverse it?
|Answer from NGA
October 25, 2009
|What you describe sounds suspiciously like a fungal disease called red thread. The blades of grass actually turn red and look like pieces of red yarn or red string. Look carefully at the blades of grass in the area in question. If they actually are red, it's likely that red thread disease has developed. You can control the disease with Bayer Advanced Fungus Control for Lawns, or similar products. Be sure to follow label directions.
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