I have sown the lawn on 06/04/12 and on 19.04.2012 were the first to see tips. Durchschittstemperatur was 10-12 degrees. At night it was still telweise down to 2 degrees.
My neighbor has sown a good 3 weeks in advance and the miracle grass is today at 23:04:12 already almost as much as his.
He has not done in 6 days at no, but the weather has not played well and was optimal.