I' used to aerate in the fall however beating the weather and marking sprinkler heads right before they get blown out as I don't blow them out is a pain. I'm thinkin about aerating in the spring from here on out was wondering how that will effect my crabgrass and what not control. We all know the best defense against weeds and a good turf is a thick turf. I'm conserned with opening it up aerating it. Any thoughts or suggestions?