Is it possible to cover,approx. 1", the existing grass with some organic material and then reseed? I am not impressed,actually disappointed, with the job that the builder did on seeding my back yard. The yard was seeded in early May and the grass is about 1 " high. I brought in some top soil and reseeded, seed from Home Depot, and reseeded two areas. The grass that I planted has outgrow the builder grass by about 15 to 1. I will be bringing in more topsoil to level the grade and then reseed that area. Would it be beneficial to cover the rest of the area with a organic material and then reseed, possible a mushroom compost? I plan on starting this in the middle of September.