How wet should the yard be for best aeration results?
Dry ground reduces the depth of cores and aeration effectiveness. Wet, muddy soil allows deep aeration but at the expense of crusting the soil in the hole, reducing access to the roots and making cores left in the yard a muddy mess that does not break down as fast. Normally, aerating 24 hours after a 1/2″ rain or normal watering is best.
