"Doug Kanter" wrote in message
...

What *is* plug aeration?

plug aeration = core aeration


Inserting something as the hole is made? In my fantasy, it's a plug of
peat
moss, but that's probably silly.

No, nothjing is inserted. Rather, a "core" of soil is removed, acutally
thousands of them. The idea is to open up the soil so air and water can
penetrate easier. If anything *is* inserted, it is usually a topdressing of
sand.