I was told to apply a second application of starter fert 4-6 weeks after fertilizing. I'm just curious why? When I do this I have a couple other questions. 1. I still have some bare spots so should I overseed those areas again when I apply the second app or should I just give it time? 2. I forgot to do a soil sample when I overseeded, is 4 weeks a long enough time to get a good sample? 3. How long should I wait to apply a winterizer after my second app of starter fert? THANKS!!!!