Today we aerified the Zoysia tees and also the raised portion of #15 approach that was completed last fall. Punching holes in these surfaces allows us to better level them and in the case of the Zoysia, give us an avenue to introduce some cool season grass overseeding. If you recall, the sod farm apparently sprayed a pre-emergent that isn't allowing other grasses to germinate. My only hope is to punch holes in this chemical barrier and or wait for it to break down.