A raw lot off Woodinville-Duvall Road in October is nothing but graded dirt and the first serious rain of the year running off it. Grass Master Hydroseeding turns that green in an afternoon: seed, mulch and tackifier laid down in a single pass, slopes included, and then the weather does the patient part. Two weeks on there is a fuzz coming up through the mat; by Thanksgiving it reads as lawn. Older yards get the same treatment in patches, wherever a project or a shaded summer left bare ground behind. Watching a bare hillside go from brown to green is about as satisfying as this work gets.