Hi! I made the mistake of leaving the turtle sandbox out in the same spot on the lawn for two weeks. Now, there is absolutely no grass growing where it once was. I know the simple solution is to plant some grass - duh! Unfortunately, my lawn is composed of various mixed greens and if I were to simply throw down some grass seeds, I'm going to end up with a perfect circle of lush green grass among an enormous yard full of the exact opposite. Is there any specific type of grass seed I should buy or is there a method I can use? Thank you.