I am not sure the type of grass in our yard. I live on the eastern shore of Maryland, and I am trying to figure out what type of grass we currently have. I live in zip code 21811 if this will help

Blue grass, tall fescue, fine fescue, rye grass, and maybe some of the more southern grasses may be possible. You could start by comparing it to the pictures on the packages at lawn supplies. Maybe bug your county extension agent. Every county has one, and many have few farmers to help. Many lawn treatment services start with analyzing the type of grass you have. You could dig up some and take it to a real lawn and garden place, not Lowe's.

Scotts (http://www.scotts.com) ?