Can you post a photograph of these rogue grasses please - I don't know what 'rees' grass is, and when you say brown, its not clear whether you mean the lawn grasses are brown and dying, or you have some other kind of grasslike growth that's alive but brown.

Hi Lynne! Welcome to Goy! I don't know what Rees Grass is either, so a photo would be really helpful. Lawns are hard work aren't they...I've had some challenges with mine over the years, but I bet we can help you with this if we can just get a visual on it! :) Karen