McMinnville sits on heavy valley clay that packs down under a summer of foot traffic and then holds water all winter — the reason so many lawns here thin out in the very same places each year. Grass Masters Landscape works the October window when the rain returns and the ground is still warm: core aeration, overseeding, fertilization, and mowing held steady while the new grass takes hold. Dethatching and weed control round out the turf program. By the spring flush the bare patches have closed and the lawn comes up even across the whole yard. Turf that thick gets built in the fall, not admired into being.