|there are yellow patches in my yard /st augustine. dont know if I have a fungus or bug.
Your lawn is being affected by some type of fungus. These are quite common in Texas this year due to all the extra rainfall. Yellow patch, summer patch and take-all patch are three possibilities. These can be treated with fungicides if you deem necessary but if the rain will let up a little the areas may begin to improve. If you decide to treat look for a product with myclobutanil.
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