I had started out talking about my garden and got on the subject of Corn gluten meal and corn meal with Dave. I had told him I read on the internet that corn meal or corn gluten meal would treat and stop Brown Patch in St Augustine. I gave it a try and thought it had stopped it That's A BIG NEGATIVE. I was keeping an eye on it (I thought) and BAM like overnight it doubled. So I have some granular fungicide on the way. Corn gluten is beneficial to your yard and garden just doesn't git rid of Brown Patch.