My son cut the lawn for the first time last evening.  Last month, I put down the usual Dimension crabgrass preventer and will apply again next week.  The lawn is nice and plush with normal striping from the mower.  He said there was a little clump of clover by the garage and I will get the sprayer out to get that and then inspect the rest of the lawn. 
The local TORO dealer picked up the mower today for 2 year servicing, that I have done.  I am ready for the 2016 mowing season.        We had a very mild winter in our area.