Newbie here.... We have lived in our house for 2 years now, I'm in charlotte nc. It was sodded with bermuda(common I'm guessing) when it was built. In my back yard there are large portions of it that just won't grow tall, it stays at basically ground height almost like a fairway. While the rest of it grows to an inch or 2. It gets plenty of water and is fertilized with Scotts. Probably about 25% of my backyard is like this. What they heck is wrong with it?