Have had an explosion of grey leaf spot in back yard and what appears to be brown patch in front this year. Some in both yards has a ring appearance. Previously acquired gls last year after never having it before. Believe it came in on some cheap mulch. Thought I had killed it end of last year but guess not. Have always had some brown patch in front but not 'till September. Never had any fungus problems in Spring. Lawn is predominately St. Augustine but has some Bermuda. Fertilized about 1 month before this with a St. Augustine Weed and Feed and lawn looked very good. Then this. Would like to go green as have pets to protect. Need a curative and preventative. About to start with Heritage but would like another option to this stuff. Live in Sugar Land.