What are your guys suggestion on aeration in spring in about a few weeks? I have this customer that wants aeration done in about 2-3 weeks.. I read somewhere that if you aerate in the spring when grass is growing, you are encouraging weed growth? I was going to do a core aeration and throw down grass seed for her. Her lawn is not very healthy at all, lots of thin spots, dirt, bare patches. She doesn't maintain her lawn and just got us to take care of it recently about a month ago. or do you guys think just applying grass seed and fertilizer right now would be the better solution?