"Ima Googler" wrote in message
ups.com...
I'm thinking of building some raised garden beds, about 12 inches deep.
Does anyone know if that is deep enough to discourage the bermuda
grass and other weeds from creeping in?

I plan on putting down a few layers of brown paper bags and newspaper
so hopefully that will help too. Any other suggestions on keeping the
invasive grass out of my raised beds? (Or is it a lost cause and I
just need to get used to pulling the bermuda runners?)

300 mills should be fine to stop stuff poking through. Anything that does
make it up from ground level will take a long time and have a struggle. The
very odd weed may come through but I think it highly unlikely. More likely
you will have problems with growth coming in from the side.

rob