Well now I have 4 tiny one-eighth inch sprouts from Scotts perennial ryegrass planted on November 17, 33 days ago. Temp is 43 today, and snow expected. Seed was planted in plastic cups and plunged into the soil in a garden, outside.
So far no sprouts were visible where the same seed was planted November 17, 2012 on a weedy neglected lawn (no soil preparation).
On Sept 24th, my new north side immigrant neighbors a couple of blocks away in their back yard at their new construction house...rototilled and planted Scotts Quick Repair (which is high in Gulf annual rye) which was mixed with Vigro TTTF mixture, (which unfortunately, listed weed seed as 9 annual bluegrass per pound). It was somewhat green by october 19. Today after 88 days--it looks fairly green and fairly good, at least from a distance Not sure--it may have been mowed for the first time. They used sod for the front yard--looks good. Sod came from AAA Turf in Hudsonville.