I'm having an issue with my St. Augustine grass. I live in Jacksonville, FL and we had several weeks of heavy rain followed by high heat. I'm starting to get several spots where the grass appears to be dying or browning mixed in with green grass. Hopefully the picture will give you a good idea of what I'm talking about. The patches aren't round and seem to be spreading fairly quickly within the past week or two. I'm not sure if this is related, but I have seen some moths in the lawn, but no webs. I need help is diagnosing what the problem might be (brown patch, insect related, etc), how to treat it, and whether or not the grass will come back in those areas. Thank you in advance for your help.