does my lush, green lawn start to turn brown in spots/patches whenever we string 2 or 3 eighty degree days in a row??? Same thing happened last year. I over seeded heavily in the fall, and fertilized in september, october, and november with Espoma Organic Lawn fertilizer. All winter long my grass stayed very green. Early this spring, ditto, very green and full. Maybe the nicest lawn in the neighborhood. Now the brown patches are showing up. I did go heavy on the pre-emergent(CGM) a little over 2 weeks ago, but that shouldn't affect anything. WTF? What am I doing wrong? PS - I did put down Milky Spore last summer, so I don't think it's a grub problem. I also think it's too early for grubs and/or brown patch fungis.