Originally Posted by upidstay
Yes, a good aeration and power raking will shatter the chemical barrier created by the pre-emergent.
Heard from the manufacturer of Dimension and Pendimethalin that the chemical does in fact create a chemical barrier in the soil. There are no systemic properties.
I would like to see the How it Works
on that supposed 'barrier'.
I have done a lot of searching already and found nothing of a 'barrier'.
Telling people they can shatter the 'barrier' with aeration, is... welll... u know....