I know that core aeration is an important practice for cool season turf in the fall. What I've never been clear on is this; if I'm not seeding, does it matter how late in the season I aerate? I figure that the purpose is to build up the root system - but at what point does root growth slow down...

Bradford Pear trees are probably the most commonly used landscape tree in my area, and their prevalence tends to dilute the fact that they really are nice trees. They have shiny foliage that they keep long into the fall. Their leaves stay green for a long time and slowly turn to a pretty reddish bronze...