As you all know Global Warming has been in the news a lot lately. Whether the recent warming trend is a result of global warming or not is the subject for another debate. If you have noticed in the last couple of years that Burmuda or other southern grasses seem to be invading your once pristine northern fescues and bluegrasses there is a very good reason for it. It's because things are warming up a bit. The National Arbor Day foundation recently released their updated Plant Hardiness maps and there have been some major changes since 1990. You may want to take a look at it and perhaps adjust your lawn strategies accordingly. http://www.arborday.org/media/zones.cfm Comments anyone?