As a result of the midwest drought (that may be almost over), my yard has many areas where the grass is dead and the surface is a brown/tan dead thatch. In those areas less than a foot in diameter I expect the rhizomes from the surrounding grass will fill in by next Spring, and I plan on leaving the thatch alone so as to not disturb the new rhizomes. But, I don't know whether larger thatch areas will fill in or not, and whether or not I should remove the thatch if do not reseed those areas.
Anyone have first-hand experience?